I wish there had been more young men like you when I was growing up. Most guys seemed so loud and pushy.
I just know that either this girl or another is looking for a guy just like you, just the way you are.
Here are some things you might try:
I'll bet you have a great smile. Be sure to smile when you see her. "Hi" is pretty easy, most girls will say Hi right back. The only thing you have to do next is come up with a question that can't be answered Yes or No. Then SHE has to do some talking!
And have you noticed how humor works for alot of people?
Another idea is to ask if she has an e-mail address. It's alot easier to type out a few sentences when you're still pretty nervous face to face.
One thing that would have worked in a heartbeat for me would have been if a shy type guy would say something like this to me... "I am so shy I can't believe it!" That would make me want to help!
The odds are good that you will look back on this memory of this girl one day, when you're 23 or 24 and know that she was your first step in gaining confidence.
You sound wonderful to me - Just be who you are, don't worry about being the guy you think this girl wants you to be. Who knows, if you look around you may see a girl who is more shy than you are, and YOU can help HER!!