Chasing Yesterday

Chasing Yesterday is a three-book series by Robin Wasserman. It follows a girl after she wakes up in the middle of rubble, and with no memory of how she got there or who she is. Deciding to call herself J.D., she sets out on a journey to discover her past. But the more she finds out, the weirder it gets.

Provides examples of:

 * Action Girl: J.D.
 * Fight Magnet: J.D., again. At the Juvenile Service Center, she gets into a fight with The Bully girl, at  a Bratty Half-Pint picks on her because he's never seen her before, when she   with her friend Daniel, a man comes out of a dark alleyway and tries to knock her out, and then later on she and Daniel are cornered in an old, run-down house where her fake   mother tries to kill her  . And that's only from book one. Not to mention that J.D is.
 * I Am Who? J.D. finds out that