How does Aunt Alexandra feel about Calpurnia in chapter 14 of To Kill a Mockingbird?

Aunt Alexandra thinks there is no longer any need for Calpurnia to remain in the Finch household now that she herself has arrived. She decides that she can take over the household tasks and provide the kind of female influence that the growing Scout needs.

Alexandra thinks that Calpurnia is not a suitable female role model for Scout, given that Calpurnia is black and of a lower class. Alexandra’s disapproval of Calpurnia is made plain when she most emphatically intervenes to prevent Scout from making plans to go out to Calpurnia’s house.

Alexandra’s racial and class prejudices are shared by many in Maycomb society but not by her own brother. He may chide Scout for being disrespectful to her, but at the same time he flatly refuses to give in to her wishes to fire Calpurnia and tells her so, in no uncertain terms: 

Calpurnia's not leaving this house until she wants to. You may think otherwise, but I couldn't have got along without her all these years. She's a faithful member of this family, and you'll just have to accept things the way they are. (Chapter 14)

Calpurnia has been a loyal member of the Finch household for a long time and Atticus shows his gratitude. In his own quiet but firm way he resists his sister’s  attempts to re-organise things to her own liking.

In To Kill a Mockingbird, how does Aunt Alexandra treat Calpurnia?

Alexandra treats Calpurnia strictly as a black servant beneath Alexandra's station in life. When she comes to stay with Atticus and the children, Alexandra is sitting on the front porch when Calpurnia and the children come home to find her there. Alexandra's first words are "Put my bag in the front bedroom, Calpurnia." It was an order, not a request, and it was not preceeded by any recognition of Calpurnia as a person worth greeting. Without comment, Cal picks up the heavy bag and starts to take it inside before Jem takes it himself.

After living with Atticus for a while, Alexandra makes her feelings about Calpurnia quite clear. She disapproves of the children having gone to Calpurnia's church, and when Scout asks Atticus if she can go visit Calpurnia at her home, Alexandra intervenes before Atticus can even answer: "You may not."

This incident leads to an argument between Alexandra and Atticus. She insists that it is time for Calpurnia to leave, that she isn't needed anymore. Alexandra also suggests that Calpurnia isn't the proper person to influence Scout as she grows into a young lady. Atticus makes it clear that Calpurnia is one of their family and has done an excellent job in raising the children. Atticus ends the discussion just before Scout returns to the room: "And another thing, the children love her." Alexandra does not argue further, but Scout notices that her aunt is furious.

How does Atticus defend Calpurnia from Aunt Alexandra in To Kill a Mockingbird?

Aunt Alexandra is portrayed as an intolerant, strict woman, who is prejudiced against black people and believes that Calpurnia is a bad influence on Jem and Scout. In chapter 13, Scout is surprised to learn that her domineering aunt will be living with them for an extended period of time and struggles to get along with Alexandra. In chapter 14, Scout tells Atticus that Calpurnia invited them to come over to her home while they were at First Purchase African M.E. Church for Sunday service. Alexandra is upset that Cal took the children to a black church and curtly tells Scout, "You may not" (137). Scout immediately responds to Aunt Alexandra by saying that she wasn't asking for her permission, and Atticus proceeds to make Scout apologize. Scout then leaves the living room and overhears Atticus and Alexandra arguing with each other. Alexandra argues that Atticus should get rid of Calpurnia, but Atticus comes to Cal's defense by saying,

Alexandra, Calpurnia’s not leaving this house until she wants to. You may think otherwise, but I couldn’t have got along without her all these years. She’s a faithful member of this family and you’ll simply have to accept things the way they are. Besides, sister, I don’t want you working your head off for us—you’ve no reason to do that. We still need Cal as much as we ever did (138).

Unlike his sister, Atticus is not racist and believes that Calpurnia is an integral member of their family. Atticus also tells Alexandra that Calpurnia is hard on the kids in a good way and mentions that the children love her. Atticus wins the argument, and Scout can tell that Alexandra is extremely upset when she reenters the living room.

It's not exactly clear why Aunt Alexandra suddenly decides to come and live with Atticus and his family in Maycomb. She leaves her husband behind at Finch's Landing, and tells Scout that she plans "to stay with you for a while."

"For a while" in Maycomb meant anything from three days to thirty years.  (Chapter 13) 

She comes to stay for several reasons. With the upcoming trial of Tom Robinson, Atticus will be busier than usual and away from home for longer hours. Alexandra also believes the children--and Scout in particular--need a woman's touch around the house. Atticus never admits this completely, and he beats around the bush trying to explain Alexandra's presence to his kids.

"We felt it was time you children needed--well, it's like this, Scout... Your aunt's doing me a favor as well as you all. I can't stay here all day with you, and the summer's going to be a hot one."  (Chapter 13)

Alexandra is Atticus's older sister, and she is used to getting her way. She dominates her lazy husband, Jimmy, who spends most of his day fishing. She tries to dominate Atticus as well until he puts his foot down when Alexandra suggests he fire Calpurnia. Her aunt reminds Scout of Mount Everest: "... she was cold and there." She resembles her younger brother, Jack, and is a terrific cook: "Her cooking made up for everything." She hates Scout's "attire," believing she will never become ladylike until she starts wearing dresses regularly. Alexandra plays favorites,  showering excess attention on her grandson, Francis, and taking his side after Scout "split my knuckle to the bone on his front teeth" at Christmas. After arriving in Maycomb, Alexandra is particularly "irritable" on Sundays due to her "corset."

She was not fat but solid, and she chose protective garments that drew up her bosom to giddy heights, pinched in her waist, flared out her rear, and managed to suggest that Aunt Alexandra's was once an hour-glass figure. From any angle, she was formidable.  (Chapter 13)

(Alexandra's stay proves to be a fairly long one, since she is still a member of the household at the end of the novel.)

How does Aunt Alexandra feel about Calpurnia in "To Kill a Mockingbird"?

    Calpurnia, the housekeeper of the Finch family in Harper Lee's novel, To Kill a Mockingbird, is more than just a maid and cook to Atticus, Jem and Scout. She is like a member of the family and almost a surrogate mother to the two kids. She has taught Scout to write, and she disciplines them when necessary. She shows them the same love that she would show her own children and, like most of the town, she realizes that Atticus treats her with more respect than she would find elsewhere in the white community.
    Aunt Alexandra, however, believes Jem and Scout need more motherly guidance, and when she comes to live temporarily, she tries to convince Atticus to get rid of Calpurnia. (Scout misunderstands this when she overhears their conversation and thinks initially that Alexandra is trying to rid the home of her!) "We don't need her now," Alexandra tells Atticus. But Atticus is firm.   

"She's a faithful member of this family, and you'll simply have to accept things the way they are."

This is typical of Alexandra for several reasons. She believes she knows best when it comes to parenting matters, and she is also far less tolerant of black people than her brother. Since she basically wears the pants in her own family--she domineers her husband--she expects to control the Finch household in Maycomb as well.
    The fight that follows between the two kids makes Scout happy for several reasons. The fight with her older, bigger brother is a draw after Atticus breaks it up; Jem is sent to bed at the same time as Scout (he normally is allowed to stay up later); and he says, "Night, Scout," afterward, a sign that their recent feuding may be at an end. Also, the fight has united the three Finches against Alexandra.

How does Aunt Alexandra treat Calpurnia in To Kill a Mockingbird?

While it is true that Aunt Alexandra tried to get Calpurnia fired in a failed Finch family power play, Atticus's sister doesn't seem to hold any specific personal animosity toward Calpurnia. Aunt Alexandra arrived in Maycomb expecting to take control of the Finch household, and Atticus gave her free rein until she brought up the subject of dismissing Cal. Alexandra probably never expected her "soft-hearted" and non-confrontational younger brother to stand up to her, but Atticus put his foot down when Cal's future in the Finch family was questioned.

"... I couldn't have got along without her all these years. She's a faithful member of this family... and another thing, the children love her."  (Atticus, Chapter 14) 

Unlike Alexandra, who Atticus and his children only saw each year at Christmas, Calpurnia was both loved by the children and an excellent example of a motherly figure. While Alexandra spoiled her grandson, Francis, and her own son had little to do with her, Atticus knew that Cal had

"... been harder on them [Jem and Scout] in some ways than a mother would have been... she's never let them get away with anything..."  (Atticus, Chapter 14) 

Atticus treated his housekeeper as an equal, but Alexandra--who was not as color-blind to the races as her brother--saw Cal only as a Negro servant. Alexandra herself had employed a black man as her chauffeur (that's how she arrived in Maycomb), and she probably never envisioned that any outsider--and especially an African American woman--could come to be as important and beloved to the Finches as Cal. Alexandra begrudgingly accepted Atticus's excuse that he didn't want her "working her head off" during her stay in Maycomb, and she eventually accepted her position as the female head of the house, superceding Cal but never Atticus.