In chapters 2 and 3 Scout and Atticus have a very close relationship.
Atticus is a single parent, so he tends to treat his children distantly. However, though she says he has a sense of “courteous detachment” (ch 1), it is clear that Atticus and Scout are quite close. An example of this is when she gets in trouble at school. She is mad at him for teaching her to read, and he explains that she can still read, but at school she has to follow along. He calls it compromise.
It works this way," he said. "If you'll concede the necessity of going to school, we'll go on reading every night just as we always have. Is it a bargain?" (ch 3)
This is an example of how Atticus does not talk down to Scout. He may threaten to punish her to teach her right from wrong, but he genuinely cares about her and it is more important to him that she grow to be a good person.