Unless your daughter is bullied and it needs to be dealt with, let her navigate ins and outs of friendships/jealousy etc You can suggest of course that she confronts that girl but honestly you can’t live your daughters life for her. At some point you got to step back and let them live their lives.

I do understand worrying of course and being protective. That’s what parents do. But we got to keep it in check as we can’t control their every move