I'm relived you didn't pursue this further Roy it really would not have ended well for you. I know from your other posts you haven't dated much but get used to seeing and avoiding this kind of woman, it won't be the last one like this you see and they won't always be quite so easy to spot.
If you think she is being unintelligent in being so blatant I think you would be underestimating her approach. It works, it's why she does it and how she learned to do it. It does not work on everyone, but works on enough men to make it a profitable venture for her. The sad truth is that in most nightclubs/bars, sex hungry guys aren't the only predators, gold diggers are the other side of the coin. One is trying to use the other for sex and the other is trying to get as much money out of them as possible and that includes the club itself which overwhelmingly runs on drinks bought by guys and drinks bought for women. It's a fairly sick game of circular parasitism all around in such places. It's obviously not everyone there involved in this kind of stuff but it's the kind of place where it's most prevelant. It's why it's such an abismal place to meet anyone descent for any gender honestly.
It's really not a surprise she would approach you, this is quite common with the most ambitious type of gold digger. I know it feels nice to get attention, especially when you are hurting from a breakup or dipping into depression but just keep in mind that makes you venerable to this kind of thing.
Don't get discurraged tho, there is a lot of great women out there
but keep your wits about you Roy, too good to be true usually is. Always listen carefully, you will usually learn quite a bit about anyone early on, don't ignore red flags. Good luck out there Roy