My girlfriend and her idiotic parents?

hi, i've been worrying about my girlfriend for awhile now because of her idiotic parents, first they neglect her safety when her two brother are abusing her and they dont do anything when shes hurt and she has alot of bruises, and recently she has a toothache, even when she dosent move her mouth it hurts, i dont find that common since it usually only hurts when u move it. and now for some reason she has a bad headache and her whole body hurts and shes been overdosing on medicine. and her ******* parents were like "oh we dont hafta waste time on bring you to the hospital, just take another pill. your not overdosed unless you cant talk any more" and they refuse to bring her to the dentis or the hospital. in the end, she has to look after her brothers when her ******* dad goes to the hospital instead. what should she do? what should i do? and btw, no matter what she does, they wont listen to her soo dont give me crap like "ooh im sure her parents are just going through some stuff, or im sure her parents love her deep down" and stuff like that. really, not helpful