There is no protection by virtue of being a family member and you can sue for Intentional Infliction of Emotional Distress (you can see the question(s) that the jury will have to answer on this at https://www.justia.com/trials-litigation/docs/caci/1600/
It's very hard to prove damages on this though simply because it's hard to put a number on it.
Work related abuse is hard as well since CA is an employment at will state and it will usually either fall under that or under workers comp laws.
What you would want to do is find an attorney near you that does both Civil Litigation and Employment Law. You can find one at www.lawyers.com. In the section for Area of Practice enter those "specialties" and then compare lists until you see a law firm that does both.
It is a convoluted set of facts and causes of action so a lawyer will likely want you to put together any kind of evidence you have and then type out a narrative (story) for them explaining what all happened.
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