AIBU to expect the adult to address that playground behaviour?

If your daughter doesn't listen when you tell her no, then you leave the park.

I wouldn't have let my children follow a child they had told they didn't want to play with them, but I also would have told the child to go to their parent and not keep coming back. Would you have appreciated that intervention?

My children/nieces/nephews were taught they don't need to play with anyone they don't want to and to believe anyone who tells them the same.

It is absolutely horrible watching your child being upset by other kids being mean, and I feel for you on that. But you do seem a bit excessively empathetic here - I probably was too when mine were that age, and I don't mean this cruelly, but honestly you and she might be happier if you were a bit less emotionally invested here. Maybe you could have just very firmly said, come on DD, we are off to get a lolly now, and then talked to her about why those girls aren't very nice and she should try not to get too upset: show her you're on her team without being quite so involved.

Also I think if one of the other parents had intervened, it might not have had the desired effect anyway. It certainly wouldn't make those kids any nicer or kinder to yours in the long run.

I get that it wasn't the words of themselves, it was the asking her a question and then loudly saying stupid things over her answers.

Maybe she was just as surprised that you didn't intervene when the boys told your child they didn't want to play with her the first time.

But in the OP you said she stood there hanging her head and getting a upset. Now she walked away. Make up your mind

She did learn. She walked away and they followed. She's also 6, after the third time they called her back you knew what was coming - she didn't.

Maybe you need to teach her that twice is enough to go back and to just go play by herself. Then you intervene when you see them following her and stop her getting upset by removing her.

So if you removed her why did she go back for more treatment?

Why not leave the park?

Btw I'm skeptical about the constant add ones of wrongdoing everytime some one disagrees with you. They will be having knives and pepper spray but the next update

After that long update about the playing behaviour, I don't think the little girl was being very sensitive at that point. She was defeated by repeated behaviour from which her own parent didn't remove her, but blamed another parent for not intervening.

By the time one of my neice's had gone off to play by herself, if the children who didn't want to play with her had followed, I would have removed her ASAP because she absolutely wouldn't have stood hanging her head upset. OP shouldn't have left her child get to the breaking stage, no matter what that breaking point looks like.

Normal six year old behaviour? Nicely playing? Being silly?

Well within the range of silliness this age group is prone to. 6 year olds think Bum is funny, for heavens sake.

The saying silly things over her sounds like a 6 year old being over excited and ridiculous. The running away, calling her a baby, telling her to count to a million and disappearing... these things show they aren't and never will play nicely with her and that's when you just teach her to walk away - not suggest she stops and watch her go back over and over again for more. I promise the silly names and giggling is an every day experience at school, but the rest of it sounds a bit more problematic.

From that last update @Oscillating , racing to a different tree, being mean with sweets, not hiding and calling her a baby they don't want to play with - that's when you should have removed your child.

These boys made it very clear they did not want to play with your child. Her wants do not trump theirs. You saw all of that happen and let your child get to the point of being very upset. When you saw them hiding sweets why did you not take your child away then to go get ice cream or something?

Yes. It’s normal silly six year old behaviour. Bloody irritating but not bullying.

Why was your DD so upset? Is she usually very sensitive?

I've read all of your updates and this is similar to a situation we had with my daughter. 2 girls who played nicely with her individually but picked on her once together, in a similar way to you've described further down the thread.
We had to force the end of the relationships, because she was learning to accept being treated unkindly because to her it seemed that we were supporting the other children's behaviour by continuing to socialise with them and the parents.
We tried repeatedly to explain to her that it wasn't okay for them to ignore her, or call her names or hit her; that she should tell them that, and she did try defending herself verbally but it didn't change the other children's behaviour and it didn't make it less hurtful.
Eventually, she just tried to move away to be on her own whenever they were together as she knew what would happen and she's never been one to hit back or anything like that.
Once we stopped socialising with them regularly, it got much better, now she stands up for herself really well when we do occasionally see them.
She's focused on other friendships and doesn't even try to play with these girls individually anymore.
I think you should trust your intuition with how this interaction felt for your child. I think we should expect better from our children than being unkind to others because its funny/silly/kids being kids. Building resilience is parenting but so is teaching your children not to pick on others.

Well it gets more and more convoluted each time you post. . So all of the above would've taken a decent amount of time and obviously you were watching the lot to be able to write this so why didn't you just leave the playground. ?