NC for this, long time MN-er!
For context: DD is 8.5 and I split with her dad when she was a baby. We ended things very amicably and have a brilliant co-parenting relationship, we are close friends, consult each other on all parenting decisions. We have her each half the week - 2.5 days here, 2.5 days at his, alternate weekends. Have done this since she was about 2. She has great relationships with me and her dad and apart from general sassiness and boundary testing, I'd say we are close.
Have long suspected DD is autistic and she is on the waiting list for assessment. Won't go into all the symptoms but one important one is that she is not a touchy person at all. The only people she will touch at all are me, her dad and one grandparent. She doesn't hug or hold hands, would absolutely never kiss any other relative and never has, even those she's very close to.
I met DH when she was 2y 10m old. We took things slowly initially and then he moved in during one of the covid lockdowns. I think he found it unusual even after we'd been together a few years when DD would never give him a bedtime hug or let him read to her etc, but never really questioned it and didn't try to force it. He tried to bond by playing games and play fighting and doing other funny things. As she got older, these behaviors heightened. She refused to let him take her to school (although we have moved past this now) and says 'i just want mummy'. For a while I pandered to it but it seemed to make it worse. Won't drink a drink he's made her, won't let him even pass her things.
Fast forward to today. She's 8.5, has two little sisters aged 3 and 1.
Whenever DD8 is her, she argues with DH non stop. It's just constant. She refuses to call him by his nickname (which is his established name, think Sam and Samuel) and only calls him by his full name which he hates. She speaks to him in this rude arrogant tone. If he speaks to her 'have you had a good day at school DD8?' she either completely blanks him or says 'yes I have, mummy'. At night time we will go to say good night to her and she goes 'night love you mummy' and he will say 'night DD8' - again, she blanks him. Sometimes if I prompt her, she will then go 'oh, night' to him.
Recently the behaviours have intensified and she's started hitting him, which her sisters have started copying. We are not a violent family at all, aside from play fighting and messing about. Earlier, DH asked DD to please move out of the way as he was trying to clean her room up. She replied 'no' and he said 'DD, I need to sort this stuff, and I can't if you're there' to which she just turned around and tried to kick him. He then walked into me and said he's done, she's a brat and he can't deal with it anymore.
Little 2 asleep so I have come into the bathroom, locked the door and told them I'm not speaking to either of them until they grow up and sort it out because it's upsetting me.
This is daily for YEARS. I just don't know what to do.
Obviously I've had many, many conversations with DD about this and why she doesn't like him, she just says 'i just don't he's DD3/1's dad not mine' or 'i don't know' or 'he's annoying'.
On occasions they're alone together when I've sent them on bonding exercises, they've actually got a long really well, especially if they do sports. But it's so short lived and usually ends the moment I'm back in the room.
Has anyone, anyone experienced this and have any advice?
I love my DH. I love my DD8. I'm worried about the impact on my other DDs and the family as a whole.