NC because possibly identifying.
My brother and his wife have three children; we have one DD who's three, the same age as their youngest. We usually see them either at my parents' house (we live far apart and my parents live roughly in the middle), or at a big family meet-up.
The problem is whenever we see them, DD ends up getting hurt. Incidents include her older cousin (aged 5 at the time) hitting her in the face because he was angry with his dad, two of her cousins jumping on top of her and thumping her while she cried (for absolutely no reason, and they seemed to think it was completely normal and were bemused when I pulled them away), and her big cousin (aged 8) repeatedly kicking her.
My DP gets really stressed by it and we both feel as if we spend a lot of time trying to stop DD from getting hurt, and my brother and his wife seem totally oblivious to it being a problem. When we've mentioned it, we get rolling eyes and they imply they think we are pampering DD. SIL has said that she's had negative comments from both school and nursery about their behaviour there, but she seems to mention it in the hope we'll all pipe up to reassure her the children are fine.
Now, I know my nephew goes through periods of refusing to speak to anyone, and that he only has one lad he likes to play with at school, who is in a different form from him. He very often seems to get expected to share everything with both of his sisters, and gets a bit taken for granted. So he's not very happy. I know my parents are a bit worried about him.
Whenever the subject comes up (or even if it hasn't!) my parents insist on telling us that we should realise they've grown up and changed so much since the last visit, or that they're such lovely, kind, gentle children. DD sees much more of her grandparents than her cousins, so every time they talk about her cousins, she gets so excited and talks about how much she wants to see them ... and every time we see them, she gets hurt.
AIBU to think my parents should not automatically excuse my brother's children here?