I'd bet almost anything looking at your views ads clicks that she'll grow up at the last minute. As for finding someone to take her then abandon her back, you have to keep and egg/hatchling for at least 1 day before you can abandon it so who ever takes her would probably have to grow her up.
I always keep an eye on this thread to see what people are saying.. I've learned a bit from reading it.
Edit: Yaay, she just matured!!