My daughter has always been socially awkward. Unable to make friends. When she is able to make a friend, she inevitably drives them away with a mix of immature, childlike behavior, and a lot of selfishness. She basically has no friends at this point. And had to quit the soccer team because the team disliked her so much and ostracized her.
And your point about clamming up at the counselor - that was my daughter too. She refused to talk, and the counselor told us it was doing more harm than good. She doesn’t talk to us either...until she can’t hold it in and ends up a crying mess.
So - the idea of putting her in another city on her own is a bit scary. Sure maybe she will grow up, maybe she will get some emotional maturity, but we’ve spent a lot of time working with her and nothing has worked so far.