Three ways to proceed, I see, and you took one.

1. Laugh, say OH! Get your food, and go.
2. Hit her with the one-two punch and tell her there is a dollar store down the street. Go get some lotion because you are ashy as f#@k.
3. Tell her I know. You looked too good/cute/beautiful/fine [compliment of choice] to approach. I needed a way to break the ice. Oh, look! You're talking to me now, so it must have worked.