I'm sure she wants you in some type of way- I played that same eyecontact, waving, giggling, smiling , flirting game with a chick too- you might just want to ask real simple questions to start with like - how do you like working at hooters?? or how are your workouts???
im sure shell pick up and continue the conversation- the eye contact is good- think to yourself- you see someone not very attractive- do you make eye contact with them for some reason???
too bad for me, after i got to become this chick's "workout buddy"- I held her ankles for pull ups, held her knees during her abs, and all that good stuff- oh yeah she lives with her boyfriend- i told her i had feelings and she said it was fine, the next time i saw her she acted like i was some stalker and creep!!!! WTF???
I have since adopted the attiutde of F**K the bitch! you will see how much better I look when i see you again!!!