Dd 15 was in a group of five friends and had a best friend within the group. A few months ago, 3 girls in the group (one of them being her bestie) started ignoring DD and other girl. They were unwilling to say why they were doing this. This seemed to blow over and things returned to normal.
Fast forward a couple of months and exactly the same has happened again. The three girls wouldn't tell dd and other girl what their "crime" was. However, they just run away laughing whenever see dd and other excluded girl.
DD and remaining friend have done the only thing possible in such a situation and have started to forge new friendships with others.
Now DD' s former best friend who effectively dumped her out of loyalty to the Queen Bee of the group has told her she will never forgive Dd as dd doesn't talk to her much as she talks to other people.
I am ripping my hair out with this. DD is expected to just be happy with being effectively ostracised but apparently isn't allowed to move on.