<human>: Give me a shortened version of the text

Just looking for some thoughts.  I hooked up with this girl a few months back.  Just a one time thing, good times had by all.  I know her through friends from years ago.  We are not in the same social circles anymore.

I didn't think much of it at the time, I wasn't really looking for it to be more than a fun time.  Since then she has texted me randomly, short texts and then doesn't really follow up much when I reply.  Like, WTH, she texted me!  But this has happened a few times, she initiates it.  I get the impression she is interested but doesn't want to come on that way.

We hadn't seen each other in years prior to hooking up but she does seem like a cool woman and I would like to take her on a date or two and see how it goes.  My question is how to approach this. I feel like a phone call would be way out of place and weird.  She has texted me several times so I was thinking about a text but that seems lameish.  I never see her socially so in person isn't an option.

What do you all think?  Would she keep texting me like that if she had no interest?  She kills conversations as soon as she starts them so there are definitely mixed signals.
<bot>: Hooked up a few months back, haven't talked much since but i think she is interested.  How to ask her out?