I think Candace has the right idea. If you want to surprise her, go to the local quilt shop or any shop that she has taken classes at and ask them. If she hasn't told you what she wants, she has probably told the ladies at the shop what she would like. Classes are a good idea when you have a new machine, and repairs are also a good idea. The local quilt shop that I bought my Janome machine at have classes to teach the owner the various stitches and what you can make with them. The classes are free for the first year if you buy your machine there. Not a bad deal IMHO. My DH bought me my machine for Sweetest Day after telling me it was too expensive. I was surprised and delighted. He doesn't do that every year, but once in awhile, so I'm always surprised.
Sue