You like ruined any chance with her right there, you are way into the AFC zone bro! There is a certain ammount of AFC that one has to use while chasing women online, but that was like a major bomb. If you're serious about trying to close online, change your status to looking for something but nothing serious, or whatever is closest on the site you're on. Search the web for cocky funny openers and improve your profile because it's probably a wreck. You wrote an entire book and invested way to much into her giving her all the power over you with no chance of recover. Pretty sure you lost this one man, better to just move on to the next with the new material you found and don't let it get to you, just keep improving your game!
Good luck bro!

Did you even read the girl's response? I've gotten tons of responses like that to messages like the OP's and turned them into #s.

To OP: She sounds like she's game to at least talk some more. Just have a normal conversation with her, and since you've already broached the topic of sex, try and keep it to that, but start out subtle... talk about why you're both on okc, what kinds of guys/girls you like, then follow up with something like "You sound fun... What is the most adventurous thing you have done with a guy?" (credit: GKS. This line is gold for spiking sexual tension) From there just stay sexual but "real" to maintain comfort and pull her #.