Just an update:

My dd talked to her classroom teacher! She said that they have cme up with a plan. She was reassured that she would challenged and she would be given accelerated programs independently of the other students when things the class were doing were too easy.

As far as the playground, DD is very sensitive and misread the kid's reactions to her. Essentially, she was upset about her friend leaving and so was assuming that no one else could possbly like her. She was just overwhelmed by emotion. Yesterday, a child approached her and wanted to play. That was all it took!

I was very proud of her for seeking help from the teacher on her own! A huge step for her and she felt positive about the outcome! I'm glad I let her try to work things out!

Again, thank you for your thoughtful responses.