Dds nightmares after days with her dad

[Wetthemogwai]

This is an odd one and I may be jumping to conclusions and putting 2 and 2 together and getting 6 but....

Dd is 16 months old and her dad hasn't lived with us since she was 6 months old. He didn't see her for a few months but since he got married just before Xmas he's been seing her a little more and in the last few months has started seeing her regularly for a full day a week and sometimes on a Wednesday when dd goes to his mums for tea.
He now lives with his pregnant wife and her feral boisterous 3 and a half year old. I know there are other children there too when she visits.

The thing is I've noticed dd is waking up screaming and screeching like she's terrified and this is happening more and more. I assume they're nightmares as I can't think if anything else it could be, obviously she can't tell me yet.
The last month or so I've noticed it only happen on nights after she's been out with her dad.

Do you think these trips out are causing her to have nightmares? Am I just being silly?

hard to say as she so young. does she come back happy fed clean etc ? is she happy to go off with him? but speak to your health visitor or gp

She always seems quiet when she comes back but I always put that down to tiredness.

I've researched it a bit and I think they're more night terrors than nightmares because of the times they happen and how she behaves after.
I spoke to her dad earlier and explained and he took it quite well (I worded it VERY carefully as the slightest thing send him into a strop) and it turns out there's always a lot of very loud children all older than her that are round at the same time so I think that may be the cause of them. She's used to a very quiet life, just the 2 of us and a few friends a similar age or younger who are all pretty quiet, she's the loudest of all of them. I think it's all a bit much fr her and it's stressing her out more than she lets on.

Hes agreed to have a quieter day next week just the 2 of them so I'll see how it goes.

Thanks for your reply :)