Well I'm back and guess what... she wasn't at the concert. She was overstrained. From what I hear, she hasn't been on school for a week, making me accidentally one of the last people she saw before she overstrained - which was just a short cycle back home, after orchestra repetition last week.

I asked another girl her mailadress ("to send her my get well wishes"), and she just referred to the girl's schoolmail, which she probably never uses. I guess I can't really do anything about the situation... -__-