backround: I originally met this girl through work 2 years ago. We flirted constantly, she was into me no doubt but I never closed. It was during a phase in my life when i smoked green often and she didn't like it at all.

So i saw her at my job last week and we chatted for a while and i got her number but she said not to call until after 11pm because that's when she won't be with her ex(she said they are still talking but not together). I didn't call her all week and then she came in again and we flirted and i made small talk, she playfully complained about me not calling her. I find out in our conversation that she got into smoking weed a lot and into blow and X, and she really wanted to smoke with me but i don't anymore since i have piss tests every month. I told her i couldn't but she should come to my place for a party i was having. she didn't show up, and i don't know exactly how to go about closing on this girl. I feel like she got turned off because i don't smoke anymore and she does habitually. She also said she has been with this ex of hers for a long time so i'm wondering if this is worth pursuing or if she is craving attention from anyone. Advice?