Who took care of Sophia's children when she was in jail and in the mayor's service as his wife's maid?

"The Color Purple" by Alice Waker is about the life and trials of several African-American characters.  As in today's society, when something happens to an adult in the African-American community the family steps up to help.   Sofia had been arrested and beaten for insulting the Mayor's wife and knocking the Mayor down.  She was sentenced to 12 years in prison.  When she did get out of prison she was forced to be the maid for the Mayor's wife.  While she was in prison Sofia's family stepped up and helped with the children.  On page 94 Sofia asks about how her children are and Harpo replies,

"They all fine Tween Odessa and Squeak, they git by.  Say thank you to Squeak, she say.  Tell Odessa I think about her."

"Squeak becomes Harpo's girlfriend after Sofia leaves him. When Sofia returns she is quite nasty to her, but she also helps Sofia out when she is jailed for standing up for herself from being insulted by whites."

Harpo, Sofia's husband that she left, Squeak is Harpo's new girlfriend and Odessa is Sofia's sister.  All of these people help raise the children while Sofia is unable to be with them.