If she doesn't respond, just wait a few days or a week or so.
Then re-engage with something random & fun.
(My texting guide has several examples of those types of messages)
The best ones are usually statements, rather than questions... texts that don't really ask for a response because they're almost more like a FB status update.
(Or if you DO ask a question, make it something ridiculous)
Here are a few more examples of what I mean:
"OK, so there was either a Grizzly Bear in my mirror this morning, or I just really look like HELL when I wake up!"
"Ummm... quick question; poodles AREN'T supposed to talk... right?"
"Hey, do your cookbooks have any recipes on how to cook a gazelle? I'm totally stumped at the moment."
"I swear the waitress had a mustache when I went to lunch today!! Yosemite Sam would be sooooo jealous!!"
"Did I see you on the news this morning? That was a horrible mug-shot!"
These have gotten pretty much immediate responses when I've used them.