Grandmother, non-tribal, asking help for daughter

MY DAUGHTER NEEDS HELP PLEASE!!!!!!!!!!!!!!!!!!!!!!!

WE JUST WANT SOMEONE TO TELL US WHAT WE CAN DO WHAT ARE HER RIGHTS AS A MOTHER, WHOM HER HUSBAND HAS ABUSED AND NOW HAS HAD TO LEAVE HER HOME (SHE HAS BEEN A HOME-MOM) BECAUSE HE HAS TWISTED THE OLDEST AGAINST HER MOTHER BY LETTING HER DO ANYTHING SHE WANTS (INCLUDING HIT MY DAUGHTER ) BUT ALL CAN BE EXPLAIN BETTER ON THE PHONE.     PLEASE ADVISE WHAT WE CAN DO FOR HER