But she was right wasn’t she? He reduced contact time because you didn’t want her there every weekend.
Is it possible for her dad to see her in the week?
I think the issue is that she’s a very in secret little girl and that won’t improve when her sibling comes along if steps aren’t taken to help her now.
When my sd was that age she was quite clingy and babyish. I just thought it was a natural reaction to me, to “sharing” her dad...all sorts of things really.
You don’t need to be there all the time. Of course you don’t. But is her dad actually spending time with her and giving her attention or is she just there with you making the effort to play etc?
Regarding the baby. For the first while at least, it won’t matter that she’s sharing him while the baby is a newborn. Including her as much as possible will make things easier for when baby is interacting more.
Do remember though that she’s only there what, six nights a month? And the baby will have his/her dad every single night!
Aside from anything else, for your own sake you need to get ok with her being there. She’s his daughter. That won’t change. She’s his daughter even when she’s being a pain in the arse! And you need to find a way to make your peace with that or the resentment will become unbearable.