You broke up before, fought a lot, she was disrespectful, and you quoted "When I dumped her the last time she took it in stride not tears like the other times ..like she was ok with it.
She cried the other times? that tells me you have gone through this before A LOT...she's into drama for the damn attention. She loves to push your buttons until you lose it, she plays the victim and cries to see you get weakened by how you hurt her and you crumble back into her arms. She manipulates for control over you. She didn't cry this time because she figured she didn't need to for you would like all the other times and cave in. But what? to her surprise you didn't. She realizes that her crap didn't work this time, so she is in a panic that you are gone for good. That's why she has been texting you....she lost the control she had on you.
Dude be done with her, delete and block her number. If it's truly over, then you shouldn't be giving a rat's ass what the hell she is thinking.