I don't see how it can be good for her to see a man who makes her eat two rooms away from her because he doesn't like the smell of her food!
@waterrat I agree with you "Do you know anyone who is friends/ family of his that could mediate between you on this?"
Try the nice and soft approach but if it doesn't work, try something else.
He sounds like a bit of shit to be honest! Emotionally abusive to you, still. Not really looking after his own kids while you looked after them when they were your step children. Not sure how great a time she will be having with someone like that. Does she tell you what they do when they are together?
"We agreed to one FaceTime call in 48hrs. He’s not allowing this, so I texted to ask how she is. I wouldn’t expect to call or text more than once for a 2 night stay."
If you are at a point in the future or now when you can afford to speak to a solicitor I would be looking to renegotiate the visits to a shorter time as he is not allowing contact in those 48 hours and your child needs to have some contact with you. And, I really don't know how you phrase this, he seems like he may not be brilliant at looking after her. Making her eat alone two rooms away with closed doors is bordering on abusive to me! If that is a regular occurrence it is appalling. What the hell was she eating!
@RickGrimesStoleMyHat "I used to sit next to dd when she phoned her mum, and basically watch her get more and more upset as the call went on with her mum saying how much she missed her."
That does sound grim and wrong of the mum. Hopefully OP your calls would not be tell her you missed her but rather to just chat, find out what she is doing at her dad's and hopefully this would eventually not be necessary.