This last text technique has really worked well in the past for me and for my students. Basically, you want to qualify her and call her out in a funny way for not wanting to hang out with you. You can say something like, “What’s up sweetheart? Are you going to hang out this week, or are you going to keep being a Diddler?” Now, before you laugh and say, what a ridiculous thing to say, hear me out.
Presumably, you’ll text her within a few hours as you really don’t want to wait too long here. Even if she didn’t respond to your first text with your name in it (because that was just your way of giving your number to her and familiarizes you more), you want to say something like, “Hey Katie, it was great to meet you today, can’t wait to grab a drink with you soon :)” Or, “Hey sweetheart, I had fun meeting you today, soooo can’t wait to go rollerblading tomorrow!”