Quote One (Ch. 4) "Boys are better than girls because they're not as whiny or irritating."
Scout, stop acting like a little girl!
Quote Two (Ch. 6) "Scout will keep from being called a girl or having any relation to acting like one."
But I'm not like a girl, I'm not whiney.
Quote Three (Ch. 12) "Scout finds that being a girl isn't bad but has benefits."
It must be not that bad to be a girl
I was not so sure, but Jem told me I was being a girl, that girls always imagined things, that's why other people hated them so, and if I started behaving like one I could just go off and find some to play with.
Scout, I'm tellin' you for the last time, shut your trap or go home—I declare to the Lord you're gettin' more like a girl every day!" With that, I had no option but to join them.
[Calpurnia] seemed glad to see me when I appeared in the kitchen, and by watching her I began to think there was some skill involved in being a girl.