This is a difficult time - especially with the new changes to your situation -
I agree that becoming creative and starting something NEW for you and your children is a Great idea!
If you feel like you can do a short visit with the family fine - go and have an exit strategy - say "we are going to the movie @ 1" and then maybe take the kids to a movie
Or buy some inexpensive flowers and take them to your nearest nursing/retirement home, children's hospital, or wherever you choose
also remember if you do go for a visit and if anyone tries to discuss issues you aren't ready to discuss - You could maybe say "I appreciate your concern, but today I am taking a break from all that just to be grateful and enjoy the blessings. So let's not talk about that anymore. Thanks" or how ever you want to word it in a way that is compassionate to you and allows them to back off nicely.
PINK HUGS & prayers for a truly peaceful holiday season!
Rita