Your quilt is wonderful, a great inspiration to so many of us!
BTW, have you tried googling your penpal's name? Even if she has been married, if she is on one of the school websites (Classmates.com etc.) or on Facebook, she might have her maiden name on the list of her former or other names ... if you remember her maiden name and where she was from, you might be able to locate her that way. Worth a try!