Is there supposed to be an apostrophe in there somewhere? like this:
"Are Satanists' Jews mentally ill?"
Regardless of religion, if your boss is a Satanist you'll probably end up being mentally ill.
Certainly, just like the old saying "the apple doesn't fall far from the tree".
In my part of the world, your boss is not usually also your parent.
I'm also pretty sure that if both of your parents are Satanist, you can't be Jewish. Maybe if your dad was a Satanist and your mum Jewish? I can't see her family letting her marry into some Satanic goyim family though.