Another female here... When I was younger, yes, I did that, and I'm ashamed of it. No man deserves it. I can give you a little insight, though. When I did it, it was because I wanted another guy but didn't want to be alone so I strung out another guy in case the first one never came around.
It's not specific to women, either - men do it too. After having been played that way myself, I tossed out my playbook and started treating the opposite sex like real human beings.
What you do with it is really up to you, but I'd recommend taking the high road. (Don't tap it and bail, you'll hate yourself later.) Move on and look for something else. You will be more attractive to her if you're not acting like little puppy dog following her around, texting, talking, making excuses to see her. We love that but don't see it as attractive - and that's why so many great guys get friend zoned.
If she comes around, great, you'll know beyond a doubt, but don't jump when she calls. If she doesn't come around, well, you're better off.