Well for one thing, you have to consider that the story was written in 1891, and society was a completely different place. Wives and women in general were supposed to be meek and non-confrontational. You also have to look at Louisa herself, she is known in the novel for her sweet, even temperment, she is a non-confrontational person. And finally, you have to look at the fact that Louisa didn't want to get married, she realized when Joe came back that she enjoyed her solitary ways. She has become a hermit and resents it when Joe is in her space. She didn't want to marry him, so there was no need for a confrontation.