I have a friend whose husband left her for another woman around November last year - he immediately moved in with said OW and introduced her to their 2 young daughters (4&2).
When he has contact with his girls he wants to spend time with them and new gf so she is usually around when he sees them.
2 yr old is a bit young to understand but recently 4 yr old has been asking a lot of questions recently about 'when is daddy coming home', 'why doesn't daddy live here anymore' etc. Preseumably she has been asking these question when at her dad's too because she's recently been coming home from the contact time in tears, very distressed because OW has been telling 4yr old that 'daddy doesn't love mummy anymore, daddy loves me' and 'daddy doesn't live there anymore because he love me now and not mummy' and so on.
Aibu to wonder if she is just being deliberately cruel and nasty just to stick the boot in a it more or she is just woefully ignorant of how much saying stuff like that hurts a 4yr old child and her mother? Said OW is 17, it wouldn't be relevant except for the fact I think her possible ignorance may be due to her age, although I don't personally think its an excuse for behaving so appaullingly but maybe Aibu!
DF is obviously very unhappy at this woman spending any time at all with her daughters, especially since she has made it clear that she 'hates kids' but when she raised this with ExH he didn't care and said what they do in his contact time is his business.