You're right, there could be some kind of mutual attraction happening. I would suggest trying to talk with her somehow...hmm.
Maybe buy something random, and get her to check you out at the register, and then ask her if she likes what you bought. Something like that. Idk...maybe buy some cookies, "yea these are great, i love these" or something...
Hmm. Or if your really brave tell her you'd like to talk to her, and see if you can get her # possibly.