Is my ex bullying my daughter

[Yellowshirt]

A couple of things my ex has done are really worrying me but I don't no if I'm in a position to do anything about it.
Firstly she invited the bloke she had an affair with and his girlfriend who didn't no about the affair to her and my daughter's home for a party when my 15 year daughter was there. My daughter does no about the affair and she found out when we were on a family holiday in Crete.
secondly my daughter has just contacted me as it my birthday this weekend and said " Dad can you pick me up at 11am and drop me off at home at 1pm as mum has arranged for me and her to go out for cake in the afternoon.
Are these two things normal behaviour of a mother or should I be worried about my daughter

The first thing is distasteful.

The second...what's the problem with her asking for a lift? Or with her going for cake with her Mum?

And I can't see bullying anywhere in what you've mentioned.

I wouldn't call it bullying no.

In regards to the first point, distasteful at best. If any consolation my ex moved his mistress into our home days after our separation. She slept in our bed, used my belongings. It was callous but says more about him than anything else. I was initially incredibly upset by this behaviour as it was deliberately provocative to even tell me... he'd chucked myself and child out and changed the locks. I responded to this type of behaviour (and continue to respond) by modelling considerate behaviour to our child.

Are you upset because your ex is cutting short your daughter's time with you (on your birthday) to go have cake with her?

What is your concern about your daughter's behavior as you allude to it being a problem, but it's not clear from your post what you feel is not normal.

I don’t think she should have brought her affair partner to the house for a party. I imagine that made your daughter feel very uncomfortable.

I’m not sure about the birthday thing. Is the issue that you’ll only be seeing your daughter from 11-1pm on your birthday? Or do you feel your ex set this up specifically? I don’t want to give any opinions on this part because it’s not clear what the problem was.