DD is in Year 2 and has been very close friends with C and M since Reception. They genuinely love playing together and DD actively seeks C out.
However, C seems very possessive of both girls. She gets angry when they play with other children, tells them they shouldn't, follows them when they try to leave and sometimes physically tries to stop them. There have also been incidents of scratching, biting and trying to hit.
Yesterday I saw a fairly extreme episode myself. C became furious with M over something tiny, tried to hit her, screamed, and then bit her own mum when she intervened. Her mum eventually had to take her home.
M's mum then told me that last year C frequently made M cry, was physically aggressive towards her and tried to stop her playing with other children.
The odd thing is that DD seems quite unfazed. She says C is just jealous and wants them to play only with her, but that she and M don't have to do what C says. She still really likes C, isn't seem to be frightened of her and wants to stay friends, but also wants other friends.
Would this concern you? Would you speak to the teacher even if your own child seems to be handling it?