In need of a Divorce and keep children safe

Im a single mother of two teenage daughters who live with my husband of 15 years. Im a domestic violence victim of 13 years from my husband who is now brain washing my teenage daughter’s. I need the money for the divorce and custody battle. I only make $600 monthly and can afford an attorney. I need to get my daughters away from my abusive husband. God only knows if he is still mentally abusing them. If you could God willing help me with this please I would be so grateful. God bless.