Everything seems to be better in hind-sight doesn't it.... i mean, alotta advice given on these forums seems to be given in that sorta, frame of mind. For instance, i was thinking, if i were you when she kissed me on the cheek, I would say:
PUA: Oi you missed....
HB: sorry?
PUA: You're supposed to kiss me here *points at lips* with a smile of course...
If another opportunity arose, and the energy was right, that could lead on to something... however....
Mate, i think you should try getting a second date... the 7 hour rule i guess would apply here... say you met her for an hour, at the cas (or where ever you were playing the poker tourney) 3 hours at the club, just escalate the situation the next time you meet her. Make sure you keep your wits about you for the IOI's, and then phase shift.
Oh and the older woman thing, it's sweet as dude... she's no more than 3 years older than you, doesn't mean a thing. I'll let you in on something, i lost my virginity when i was 18, to a 27 year old

probably wasn't the best shag of her life, but she got off on teaching me a few lessons, that still come in handy when it comes to pleasing women in the sack.... hehe...