My best friend gets in fights with her mother often. I do not know if they get physical (though I wouldn't doubt it).
This family is very poor.
My friend has run away several times, but only for a few days (she's 17). She is now living at a soup kitchen/halfway house in town. It took us a long time to track her down, but thank God she is safe.
She really needs prayers. It sounds as though her mother is abusive, but I can't be certain.