For OP, she obviously had interest or she wouldn’t have stuck around for that long of an interaction. It was your job to realize it and end it earlier to leave on a high note. He then robbed her of the chance to chase him like she wanted.
If he had done this and stayed silent until she inevitably reached out, it could’ve been:
“Oh you found me, guess I owe you a drink. How about I make good on that bet and you meet me at blank on blank night”
True that. I got it wrong mainly because in recent experiences of approaching and getting a number, me and a girl text, then one of us travels to another city or something like that, some days pass, the momentum dies, she probably forgets all about our 5-10 minute conversation (or some other guy appears in her life), and as a result, we don't go out or see each other again.
So now I decided that things should happen quickly. Especially as I am travelling on Monday (met her on Friday), and my idea was to see her during the weekend at least once (even if it was for a short time) to leave a better imprint in her mind about me and my energy. However, reading this strategy right now sounds like it's coming from a scarce mentality mindset. Especially if we had a date already (unlike a quick street approach meet), and I should probably be able to maintain over text. But this is a tricky game too, and the communication there is poor.
I doubt the only reason for this flake is the "early text". If it is, this is some damn strange woman behavior. But it may have significantly helped tipping the scale.
I remember on another occasion having a night time 1h instant date after an approach, getting the number at the end, and then texting her after 2 or 3 days. I got an instant reply after a minute. And the girl was like a 9. I guess absence can be really powerful.