I'd be wary about using someone who couldn't be bothered to show or call off in future. Yes, you weren't inconvenienced this time, but she didn't know that and left you hanging.
And in fact, your response now will "train" her about what you want from her in the future.
You have the opportunity to treat you crappily again.
Or you might be able to teach her to honor her commitments (or to not make them in the first place).
If what you want is for her to be a potential model in the future but with greater reliability, then I might do this:
Call her and say, "Since you didn't show up at all, and especially since you didn't call me to tell me you couldn't make it, I can only assume that you didn't really want to be in this sort of thing anyway.
"If that's true, I won't put you on the spot by asking you again. I don't want to impose on people. But if I'm wrong, and I've misinterpreted you, it would be too bad to cross you off the list, because otherwise I'd absolutely want to work with you. What would you like me to do?"
She sent you a big message that says, "this doesn't really matter to me." Your response is, "that's ok." But you shouldn't ignore that message.