Calling all stepparents and parents

Hello all. Wanted to pick your brains. Right so I have a 5 year old daughter from a previous marriage and I have recently remarried an amazing man (stark contrast to the last asshole) my new husband has no children of his own and is amazing with Eila...however the problem I’m facing is that while my other half and I were dating and engaged my daughter was absolutely fine. Since the wedding she’s horrible to him! Hates it when he comes near me, doesn’t like it when he and I show one another affection (even when we include her - for example if he holds me hand he’ll put his arm around her too) she’s rude to him, everything is pretty much ‘MY MUMMY’ and that’s it. I can sort of see my poor husband is getting tired and I want to show him how amazing being a parent actually is. We’ve been married for 4 months now. How to I fix this little lady? Is it too late for her to accept a father figure in her life? He’s doing absolutely all he can to bond with her but she’s having none of it! She won’t even hug him goodnight and he’s not allowed to read a story to her. Where’s my good little lady with the beautiful manners gone? I’ve always had it so easy with her, even when I was a single mum. I feel like she’s gone 🙁