I opened a set and it went great. After 10 mins or so I isolated my target (HB8). She was asking me questions and was totally into me, so I thought I would DHV, so I did style's 5 lies. She failed at #4, so I told her that she owed me a drink as we agreed before we started. I should have let it go but I did not, so I kept saying she was a poor sport and such. She eventually told me that I should buy her a drink... then she started to text message someone, ignoring me. I was thown off. Surely next time I will change the subject or just leave. Any suggestions PUAs? I was just thrown for a loop when she didn't follow through! My second question is what should I do next time I see her? She hangs out at the same clubs as I do.
You should of taken it to the next level by taking her somewhere else for the drink. Regardless of who buys the drink you should tell her something like "hey, I know a great place" or "theres this new place I wanted to check out." If she's in a 2-set it would be a bit harder to convince her. DON'T take the friend along, she's only be a distraction.
If you see her again and want to approach simply start off where you left off. Say "Hi, remember me, I think you own me a drink." and see where it goes from here.