DD is almost 8 and has been best friends with "Daisy" for about a year. DD loves Daisy, loves going for playdates and up until recently was so happy to have a best friend.
However, recently since going into year 3, Daisy has started being mean to DD. Not all the time, but occasionally. Some examples: she told her "You're nothing" which pretty much broke DD's heart; today she told her when DD was scared on some apparatus in the playground that she couldn't be friends with her if she didn't do what she was doing.
There is another girl who seems to be trying to get Daisy to gang up with her against DD and has been picking on her separately as well - things like getting her excluded from their group in PE, or not allowing her to play with them at break time. This other girl has also been physically rough with DD, pushing her into deep puddles at playtime so she had to walk around in wet tights for the rest of the day.
DD is sweet and quite quiet and never answers back when horrible things are said to her, which I guess makes her an easy target for these more dominant personalities. She has other friends, but loves Daisy.
I know Daisy's mum pretty well, but really don't know what to do. It's only been a handful of times that anything has happened with Daisy (more things have happened with the other girl) - so I'm not sure telling Daisy's mum would help. I feel like I need to arm DD with the confidence to push back a bit on these two girls, but I don't know how to do that? Do any of you have any ideas?
I have spoken to DD's teacher about the incidents with the other girl and she was spoken to, but it doesn't seem to have made much difference.