Brief history:
Mum passed away a long time ago. Dad has new partner, all good, everyone v happy for him as he was very lonely on his own. They've been together several years. Trouble is she's very insecure and possessive, she's alienated lifelong family friends so they no longer visit as they didn't feel welcome.
She listens in to my phone conversations with him which on the whole I ignore until she starts shouting when I say something she doesn't like at which point I usually ask her to stop and end the call calmly.
Now she's accused me of withholding contact of my children (not true we do visit although try to meet dad away from the house as much as possible) because of an alleged row she had with my husband. There was no row, he made a joke she didn't like and she huffed a bit but this was over 5yrs ago and it's never been mentioned since!
Would I be unreasonable to confront her? or shall I just grey rock it like I do most of the time with her nonsense?
Dad generally wants a quiet life so won't stand up to her and I don't want to make him unhappy as she'll invariably give him a hard time.