As the poster above - I'm also the woman / partner in your situation.
I’ve been in my SD life for 10 years. Her dad had been divorced for 3 years when I met him and I was introduced slowly after 7 months of dating him (SD was 8 / almost 9 at the time).
At around the age of 14 (so I’d known her for 6 years) a hatred developed towards me (fueled by her mother who is very bitter about their divorce and anyone associated with the dad / her EX is the enemy).
SD won’t look at me, talk to me, engage with me and if I was lucky there would be one word monosyllabic answers. It became very hostile and she was only happy if she was manipulating her dad or had a total monopoly on him. I remember a friends BBQ when she was 15 and she literally spent 6 hours sitting on her dads knee with her arms wrapped around her dad.
Despite her father spending lots of 1 on 1 time with her and trying to get to the bottom of what was wrong he always got ‘I don’t know’.
I completely stepped back (for my own sanity). I took myself away and was always out the way when she came over. Sadly by the time she got to 15 she was caught taking photos of some personal letters (filed away so she had gone through files looking for them), our bank statements and breaking into her dads phone - taking screenshots of our private WhatsApp messages and sending them to her mum (remember he had been divorced from her mum for over 8 years by this time). After this - she stopped visiting or communicating with her dad. She has completely erased him from her life.
She did have some counselling at the advice of social services but stopped after 2 sessions as she said she didn’t need or want it.
Absolutely anyone associated with her dad has been erased - grandparents, cousins, godparents, aunties or uncles.
It wouldn’t have mattered who the new partner was - she would have behaved the same with anyone (so your new partner shouldn’t take it personally as hard as it is).
My SD (now 19 who we haven’t seen or heard from in almost 4 years) takes no responsibility for her behaviour and has no interest in seeing us or anyone related to or associated with her dad.
We don’t think we wouldn't have changed how we handled things - we’ve discussed it a lot over the 4 years. The only thing we would have done was to do some counselling as a group / or her and her dad, as she couldn’t verbalise what was wrong.
My DH for almost 4 years has written to her monthly, tried to phone (she never answers), tried to text (she never answers) and has sent Christmas & birthday presents and never gets anything back. He’s heard nothing from her in 4 years. He’s absolutely devastated.
You will get some posters telling you it was too soon and to leave your partner - only in broken family situations do children seem to get to dictate adult relationships. I don’t agree with this.
I would recommend you ask your partner not to be around when you see your daughter. Give her some space. If you can get her to some counselling to talk through her feelings I’d recommend.
Good luck 🤞