Just go back to the club at the same time
If she is there give her the eyes
If sh eye fucks you back get her number straight away
Nothing wrong with an email
Only problem is if she got hit on by five or six guys that night
She might not know which one you are
As a foot note I showed my wife basille s letter she laughed and said it was like a bad parody
I met her at the start of the night and we hung out, chatted, danced (No HOMO), laughed, drank etc... for a few hours, had a great time, club was open I think for maybe an other hour. So after jetting, once she realized I wasn't coming back either was pissed off and accepted the first advance from another guy or just didn't give a shit. At that point I spent the whole night greasing her up and left her as prey for the other vultures in the club. Pretty sure if I had some girl doing that to me that just left I would grab the first thing that came my way before the club closes to not miss out.