She's 5, generally well behaved, liked by her teachers etc. She just is permanently attracted to the children who then upset her.
e.g. Friends 1 and 2- Reception- two very boisterous children who liked running around at top speed and play wrestling. She frequently came home crying because 'they pushed her'. I kept explaining to her that that was just how they played and they genuinely didn't mean to hurt her. I told her to stay away from them. Teacher told her to stay away from them, but she kept gravitating towards them and saying 'but I want to play with them!'
Friend 3- She's now teamed up with a Y2 who is very manipulative. She's using DD as a messenger between all the girls and there's all this friendship drama :(
There are some really lovely children in her class who she could have such a fun time playing with. There's always a few at the park etc and I've really tried to have playdates arranged. DD usually ends up following me around the house moaning while they play 
I volunteer at her Rainbows club and she's exactly the same there- she is like a moth to a flame with anyone who looks like they're doing something they shouldn't!
I'm tearing my hair out here!