I need to get my sisters out of their living situations
Can somebody help me? I need some advice. I just learned that one of my sisters is coming home with unexplained bruises and she keeps saying she walked into a door or a dumpster. Their father won't do anything because my sister won't admit to being abused. Their mother has a new guy and he has a history of drugs, and violence and sleeping with underaged girls and all the bruising started in the last 2 months of the mother dating this guy. I don't know what to do. My sisters hate their mom and their step mom but love their dad, and I know for a fact that I am the best one to care for them, but what do I do? I don't want to go to the police and have the abuse possibly get worse if they can't get them out, and if they do get them out how could I fight for custody and prove I am the best thing for them? But I also don't want to sit and do nothing and chance something horrible happening to one of them. After they were born I raised them for 5 years so they are MY kids, at least in my heart.
My mother has mentally/verbally abused them forever and so has their stepmom and their actual dad. Their now ex-stepdad is still in their life but he sexually abused me as a minor for 4 years.