Help me- My dad is kicking my mom out into the street, what do i do?

My Dad and my Are getting a divorce, my mom had NO Money once so-ever, and my dad is making her leave, She says since she had No money she will have to sleep in her van for a while, I;m not worried about her because I know she is strong and can make it, But there is more to this, My Little 8 year old sister is Down in Dahlonegha GA Visiting her Grandparents, and my mom is leaving today and wont be able to talk to her again, When my little sister comes home with stuff she wants to show her mommy and finds out mom left, She is going to think that Her mom Abandended her for the rest of her life, My mom wont tell me where she is going and she cant promise me that wont kill herself. Please help me, I dont know what to do to help my mom out, I have no money as I am only 16 Years old, My dad wont give her any money, Please help me, Thank you.