ok bro u met this girl online... of course she's gonna be flaky, what u should've done was ask her to meet u at a local spot at first like a coffee shop or some store... i think that when u invited her to ur room she got a little spooked becuz shes never seen u in person.. well think about it... would u go over to some persons hotel room who you've never met in person?
jus move on, ur not losing anything, and plus ur in VEGAS!!! enjoy it!! there plenty of single or married women that are jus looking to ave fun and get lose
from my opinion, i rather meet a girl in person, i dun rly like meeting girls online, cuz ive seen some girls and some of them look much better on their profile pic, and u never know, that hottie ur talking to online could be a theif or something like that