You could take the bull by the horns. Here is an option.
Write to your ex celebrating the progress from zero nights to three in a row. Mention that the video calls were not helping, they made your daughter unsettled on both occasions. Whilst you appreciate there may be benefit to building things up gradually. You want to maintain the progress already made. A good way of doing this will be every second weekend with you through term time - Fri school pick up to Mon drop off. This consistent pattern will be really helpful at your daughter's age.
If your ex does not agree, get another application in before MIAM runs out.
It must be heartbreaking to see the hostility again. The fact she came with you today is not insignificant. Her behaviour when she comes is a test. If you can be loving and supportive all the same, your ex's story is discredited. If she can get a reaction/negativity from you, she has support for what your ex is telling her.
In my view, your ex has done this to her own child. This is atrocious behaviour which justifies you in never giving her the benefit of the doubt. Meetings and phone calls do not feel like the right way to deal with a situation where there is no good faith.
I was going to write and ask people’s thoughts as whilst she came today her hostility and anger was there with vengeance and she wanted to go home half an hr ago.
I understand taking her home isn’t the best thing and I should say no but I’ve tried that and she just has a melt down and seeing her that unhappy being with me is just to much.
The whole time I had her today she was horrible to me saying the below.
“It makes me happy being nasty to you”
“I want xxxx to be my daddy because he’s better”
Xxxx(exs partners daughter) tells her she has to be nasty to me otherwise she will be in trouble when she comes home”
“I force her to spend time with me all the time”
“All the pictures we have she was forced to take them”
“She’s never coming with me ever again”
It’s just such an extreme change in behaviour the happiness and fun we had at the beginning of last week to this again it makes no sense to me at all.
My daughter needs help she really does as non of this is normal and no one seams to want to listen or even see it as a concern.
I admit today I was in tears whilst she was here hearing how hateful she was being and I tried so hard to stay strong but I just had to walk out the room and go upstairs. She did follow me but didn’t say anything but she did ask why I was crying when I sorted myself out so I was honest and said “because I’m hurting darling to see you so unhappy hurts me”. But she didn’t say anything to that.
I spoke to ex when I dropped her off and told her what was said and she just laughs and then claims little one says all sorts to them aswell.
I feel I need to email ex about getting support and help for my little girl I’ll write it and post it here and get peoples opinions.
As I fully agree talking to ex will do nothing as she’s more than happy to see my relationship disintegrate with our daughter.