DD had a bit of a tumultuous relationship with her BFF toward the end of the year last year. She came home almost every day saying "A. wouldn't play with me." or "A. wasn't nice to me." I'd ask her and it seemed like it was catty girl stuff. She's in a multi-age classroom, and that stuff is common for kindergarteners. I would always say there are always other nice kids to play with, and to just find someone else if A. wasn't being a good friend. I'd also give her suggestions of other kids I knew were always super-friendly. This year, I switched her to a different class mostly because I didn't feel her teacher was a good fit, but also to get some distance from the BFF, whose mother is a nightmare and drives me nuts. At the BFF's bday party during the summer, the little girl's grandma introduced my daughter as A's "frenemy". While that was inappropriate, it led me to believe that my daughter might be dishing out some of the nastiness as well. There's only so many talks we can give. When we send them out into the world (even the preschool world!) they have to figure things out as they can. Well, they still play together at recess and the "A won't play with me" crap has started again- today was the 2nd day of school! Is this bullying? Should I continue to talk to her about the right way to handle it and let her figure it out, or should I talk to her teacher? I always err on the side of letting kids figure it out- I am a Montessori teacher! It's just hard to gauge when it's your own kid and you only get one 4 year old's side of the story.

Re: bullying?
If she says A doesn't want to play with her, then ask her "So who did you play with?"
Their recesses aren't that long and so long as your daughter doesn't seem upset by it, I'd let it go. There's lots of that "i don't want to play with you." "you're not my friend" junk going on and most of it is ignorable. If you make it into a big deal, your DD might feed off of that.
I agree with this completely. It runs into real life as well when I hear friends complaining about their kid being 'bullied' by being left out of activities other kids are doing together.
Life involves certain struggles and that includes social struggles that begin at an early age. Kids get to choose their friends. Forcing 'friendships' is not only impossible, it is harmful in the bigger picture and scheme of things.
There will be tears in life. There will be hurt feelings. It is part of the life experience. Hard to witness as a parent but necessary in order to grow.