1. Dont write on wall unless you know them well, my advice of respect privacy
2. your hope with the bar will stay hope, Unless they're tottally into you which i doubt in this state
well my advice is screen their wall, write them a personal message of someting you noticed (may have to wait till she has something worth commenting) and like this try to open 2-3 topics, inclue some questions and funny stuff so she has something to respond. maybe do it while shes online on a evening so you can chat and build up some comfort. depending on the interaction going, id insert later a *didnt know you where that fun, we should go buy some eggs and throw em out of the car! are you in or do you chicken out?!

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