DD is 4.5 and has her first Best Friend - a girl she is obsessed with, wants to marry, wants to see every day after school etc.
Obviously I'm pleased she's found someone she gets on so well with, but the whole thing makes me feel a bit uncomfortable. She was always the child that played with everyone at nursery, and always very happily. She doesn't seem quite so happy all the time now, and also mimics the other girl's behaviour. DD is definitely the less dominant in the pair.
I know that friendships are always a bit of a minefield with girls and it's all part of growing up. AIBU to try and encourage her to have a wider circle of friends, or should I just keep out of it?