Can I file restraining order and divorce for abuse, exploitation?

My in-laws physically abuse me by slapping me. They are trying their best to separate me and my husband. They have mentally harassed me, and I have a signed copy from my husband on the day the issue occurred. They are exploiting us financially. Can I file a restraining order? Is this a domestic violence case? Can I use my husband's signed letter as proof of domestic violence? I have a few videos where my in-laws are speaking about me. They have caused many family problems. My husband and I are living separately in the same house because he doesn’t want to give up his share of the home. How can I get a divorce without giving up my properties? What all evidence do I need for this domestic violence, financial exploitation, and divorce case?