I'd agree with Majikal about tying it back to your initial encounter. First text, regardless of day-game/night game, whatever-game for me is generally something along the lines of:
"Hey it's X from X, now you have my number as well

"
Adapt it... If it's nightgame and you're both drinking... suitable would be:
"Hey it's X. The guy who was just hitting on you. Now you have my number"...
She isn't mistaking your interest or the reason you're texting with something like that, that's for sure. Plus it's confident. (I've used this exact one a number of times... generally successfully).
With this 'now you have my number too' idea, you have to text quickly... IE: in the case of the OP, it's too late to do this now, with this particular girl.
Quote:
Interesting topic...
So guys, I have the same problem.
I met a girl yesterday, we talked for a few minutes, she gave me a hand with some directions. And she told me that will stay in NZ for few months more. I suggested that we should keeping touch, she agreed with. She gave me her number. I sent a text to her with basic text "Hi xxxx. Was very cool meeting you... very random. I'm Saint. Rod from xyz by the way". I sent this text to make sure that she will have my number.
She answered back: "My plausure. If u need some help in NZ let me know xx".
So, what would be cool to sent to her now?
It sounds to me like she believes you may like further tourist help! I don't know that she got a romantic vibe from you... Not really enough detail here. Nothing to lose with a follow-up, though... you'll never see her again, anyway. Maybe something like:
"Hey I found a really cool coffee spot/patio for a drink/whatever, and thought of you. Want to join?"