Compare Big Ma’s grammar to Mama’s grammar?

I don't have the book in front of me but consider that Ma is a teacher. She takes education extremely seriously and knows how important educated "white" grammar is if her children ever wish to have a decent future.Big Ma still uses the syntax and vernacular from old black slave culture. It is an often abbreviated slang use of english with elements of their native tongue. Take a look at the book and you will notice right away. I hope that helps a little.