Keep chasing after her

Well, that didn't go over all that well, but you weren't about to let Erin get away, either, so you chase her down and ask her if you could start over with her.

"Well, I guess since you at least had the balls to apologize, we can," she tells you, managing to **** herself to smile as you re-introduce yourself to her, "but you're still not going to sleep with me tonight, John."

"That's better, now let's see if we can enjoy ourselves for awhile, because I really am a big fan of yours, Erin," you say to her, hopefully having gotten the situation under control again as the two of you begin to converse.

"I'm sorry I was such a bitch to you earlier," she tells you, "but you have to understand that I'm always on my guard after the peephole incident. But hey, since you do seem like a nice guy, I would like a drink if you'd like to get me one."

Smiling, you excuse yourself to the bar and buy her a drink, nothing that will make her suspicious, but one that will hide the special "doctoring" that you have now decided you wanted to do to it to make her pay for her earlier indiscretion.

You needed to gain her trust, you see, because earlier in the night, you had met a rogue bartender that handed you a powder that he said would knock anyone out if you mixed in their drink.

But now, you weren't too sure that you wanted to actually use it on Erin, since you seemed to be charming her enough that she could change her mind, anyway.