How does Scout feel Calpurnia is different at her own church?

While at church, Calpurnia slips into the dialect of her peers. She speaks in a different pattern and uses different phrases or expressions. Calpurnia uses Black slang and puts away the proper grammar she uses in the Finch home. Calpurnia doesn't want to give the impression that she is better than her "own" people.

how do the people at cal church treat the children