I'm glad your niece isn't staying with you any more. That would be very stressful to have around.
It's scary and it's too bad she is going through that.
I think groups are a good idea, as long as they are the right group. But you have to give it a chance to find out. I hope it goes wells and it's a good group for you. I'm glad your husband is going, too. It's good you have his support.