Celie's father beats her because he thinks she is winking at a boy in church, although Celie denies this. Celie states that she prefers looking at women, since they do not scare her.
Pa's remarriage does not prevent him from feeling sexual jealousy toward his daughter, whom he wishes to control.
Celie worries that her father will begin sexually abusing Nettie, so she changes her mind and tells Nettie to wed Mr. ____ Celie reveals to God that she no longer gets her period, meaning she can no longer become pregnant.
Celie realizes that, although Mr. ____ himself is a man of bad reputation, he is of better reputation than Pa, and could at least spirit Nettie away to another location, sparing her from Pa's abuse.