Yes, she is part of the Wishes fireworks, but no, not for a meet & greet...next best thing is to stop into Tinkerbell's Treasures (little shop in Fantasyland) FIRST thing in the am and ask if anyone has woken Tinkerbell yet, If you are lucky (and EARLY!), your daughter will get to wake her up (tap or wave a wand over a box and out flies a bunch of twinkling lights that continue to swirl around the shop...)
We've never done it, but we tried a few times this trip -- no luck!
Hope that helps - and wishing you a little pixie dust that you will get lucky and a get a chance to do this. Sounds like fun!