Well played.
Some things to take away from this...
1. Never ever cry in front of woman. EVER. I know girls say they love a sensitive man...but this is bullish!t. OP didn't cry. She did for manipulation. He had the power here.
2. Never ever send a girl gifts, letters, flowers, whatever, after a break up. They will usually run away.
3. 180's work. If you are the same sniveling dude, a chick will NEVER come back. By becoming different, getting more muscular, getting a new job, moving to a new town, hanging with new people, you grow and become desirable to EVERYONE.
4. Girls usually don't change. I'd say that more than 90% just do the same thing over and over in each new relationship. What does change is that they become better manipulators and find weaker targets to dump their issues onto. The OP should continue to avoid this woman.