Hi there and welcome,
You are in the right place. Our forum is quiet on weekends, so you will see many more replies on Monday and thereafter.
Wow, your story is truly a doozy. I am very sorry you are dealing with this. Your partner's son is very disturbed as you already know, and I agree with Crayola that a home setting is not an option for him. I don't recall if you mentioned his age, but I am guessing he is still a minor if CPS is involved. Has your partner signed his parental rights over to the state as well? He needs to be kept in a locked facility unless and until he becomes stable, perhaps with medication.
If there is any chance this boy may end up in your home even for a short time, please take steps to insure the safety of your cat. Some of us have had to re-home pets because they were not safe around our children. Sad but true.
Keep posting, we are here for you.
