I'm sure it's very stressful for you!
On the bright side, at least you can have a "fresh start" in a new city and won't be worried about seeing this family anymore.

I'd imagine CAS would support you. You can't expect that people be mandatory reporters if they aren't going to get some kind of help on the other side. It sounds like the family is probably very angry and wanting to do something to "get back" at you. I hope the powers that be can see through to that and you won't end up losing more than you already have.

Good luck!