We moved to a new area 3 years ago. It’s been hard to make new mum friends as I work full time and people have enough friends. However I was settling in and started to slowly make friends. At a an evening gathering at one of the mums houses were gossiping over Prosecco and having a laugh. I repeated some trivial gossip to one of the mums and she got really upset. I didn’t really understand why but turns out it was about her and her family. I had no way of knowing whether it was or wasn’t about them. I apologized and she tried to force me to tell me who had said it. I refused as I didn’t want to break the persons confidence. Also it was one of the mums who is really good friends with her. So I didn’t want to create a shit storm between them as it really was trivial. This mum has now made it ‘a thing’. I FaceTimed and apologized for gossiping but wouldn’t say who had told me and she said she respected my decision and I closed out saying I hoped it wouldn’t affect our friendship. She has now frozen me out of this group of friends. I’ve been removed from all the chats and my daughter is excluded from the activities of the other children. Individually the mums are still nice to me and friendly but it’s very awkward in the play ground to the extent I dread picking up my kids for fear of bumping into her or her husband. I have tried killing them with kindness and proactively passed pleasantries but remain frozen out and excluded. I have made some other mum friends who are lovely. But my daughter is not in their year and is now not close friends with the daughters as they all do stuff together and sleepovers AIBU to think this is bullying. What can I do to improve the situation.