I think it depends on your evaluation of how much interest/attraction you built with her. I am not usually very keen on asking her out through text but sometimes circumstances punish you severely.
You pointed out an important fact, that is you didnt use any keno at all. This makes it very crucial if you didnt project a very High Value of yourself to her. If she was really, genuinely attracted to you go ahead for the text. If not, I would still text her just to tell her that youre gonna be around the same club or ask what she will be up to. Dont ask her out blatantly if she just "likes" you. She might like another 20guys, and if shes close to HB8 or higher be sure many other guys will try and ask her out this week. So be unique, interesting.
Regarding actual texts that you can send, would be hard to give you an example as whatever you say, should and have to reflect what you do in person.
Example - I have no problem with texting her this in your case if she is into me :
"Hei there. Guess what!? Ive got 2 tickets to next Saturdays VIP party with my friends. Im not really sure about who to take with me, what you reckon ?

"
Ok, the "what you reckon" part might sound a bit of like giving her higher value,
but as I said earlier, whenever I meet a girl in a club she knows im surrounded by girls (no matter what HB they are as long as not 3 or lower) and also leading guys every now and then while having fun. So my image is already framed in her mind.
This makes it obvious for her that I would have no problems in finding someone to take with me.
By now she knows I want it to be her. Then I just wait for a reply and continue building on her reaction. Im always cocky but nice and sweet at the same time, but then I live up to expectations.