heres what i would do.

text her today saying "hey, was fun seeing u again. i'll txt you in a couple days when when im free and we'll hang out! enjoy the rest of ur weekend"


prepares her for the next text, so hopefully shes less likely to flake, and also says that your a busy in demand person, so you're the one saying when you're free and its conviencent for you.

then leave it a few days and text with "hey, im free tonight or thursday eve. i'm in the mood for xxxxxxx. sound good?! lets say.... 8pm?"

give her choice, but all outcomes in your favour.

obvioulsy replace xxxxxx with what your in the mood for and reakon you'd be able to handle.. coffee / drinks / random outing / drive / etc...

i tend to tell them what we're doing, as opposed to ask if she wants to. but each to their own, it depends what fits your personality.

and do it that way and she has her 2 texts too