I just started trying online pickup today. I personally like to mess with girls. To me so long as I am having fun, that is all that matters. An attitude that has worked well for me.
I would say something like, "You're the one who winked at me... do you always hit on guys you find stunningly handsome?" Maybe not so direct but something like that.. When you say she was the one who winked first even though it was clearly you it makes the conversation fun because you can play a little game of acting like she is crazy at first.
Or you can pretend like the wink never happened and just open like you would if in the field. Some basic routine. I would recommend negging her quick also since you winked first.
At least that's my two cents. Still trying the online thing out myself so if it fails let me know so I won't make the same mistake
