My dsis has been in an abusive relationship for 15 years. He is abusive in every way. Over the years things have got worse, he has put knives to her neck, thrown bleach in her face, strangled her, he likes to lock her in her bedroom for a couple of days at a time (usually around a religious festival) all the while tormenting her through the door, steals her money, has made her have ALOT of children, he has actually jumped out of a car and mugged her on the street taking her handbag ( with their children there), likes to threaten to kill the kids pets, made her discharge her self from hospital when she was seriously ill etc. The children have witnessed everything.
Despite all this she won't leave ( they dont live together, but close to each other) and I don't know what to do anymore. I'm scared for her and her children, especially the girls as he has said some pretty abhorrent things in the past (once they can bleed they can breed, wanting to marry them off at 13 to stop them being " slags' etc), he had an affair with a 15 year old and attempted to groom me when I was younger.
If reported them to children's services several times and the police, which resulted in her cutting me out for 2 years. When we got talking again I couldn't believe how disturbed her children had become. They behave oddly, very violent, make animal noises etc.
I'm now at a loss over what I can do. Nobody seems to care about the kids or my sister. Sometimes she phones me while he is beating her and I have to listen to her screams befor the phone goes dead. It makes me feel physically ill with worry. If I phone the police or children's services they do nothing though. I'm so worried he is going to kill her. How can I help them??!
( sorry if its a bit of a ramble, I can't think about it all clearly and just needed to get it out)