I am sorry to hear that is happening to you. I completely understand how you feel. I had a sister in law who had abuse my brother because she was insanely jealous of everyone who even look at my brother. She had attempted to kill me on more than one occasion. I couldn't prove what she had done to me because of where I live at. She had file false police reports, call cps on us on more than one occasion. She been locked up in the mental hospital for attempted suicide. It is time to leave. I would left the second she assault me or told me what I can and can not do. No one has right to do that anyone. Have you contacted the police? Let the know about the violence. File a complaint against her. Tell them that you want to be anonymously. Someone saw it had happen they were concern for your safety. Tell everyone that you work with what is happen any time she threaten you have them anomalously contact the police and said they heard her threaten you. Ask if they can hired an undercover office someone who can hear the things she say to you. Or witness any kind of harm to you. Please contact the police a lawyer someone who can help you legally.