Sorry to hear about your problems with the family (or rather the DAUGHTER'S problem with you and her father)
It is pretty straightforward.
She is jealous .
You have invaded 'her' territory...an understandable reaction, if immature.
It is not an uncommon situation.
It is NOT your fault.
Things are not likely to improve while you're all under the same roof.
Ask your partner to do something quickly to resolve the situation.
It must be a great worry to him too.
Good luck .
