for Pieces of Me by Amber Kizer
When high school oddball and introvert Jessica Chai is killed in a car accident, her parents decide that Jessica would have wanted her organs donated to those who so desperately need these gifts of life. But Jessica is angry about dying and being dismembered. Taking the idea of cell memory to the next level, not only do the recipients get pieces of Jessica, but gets pieces of their memories and lives moving forward—she knows what they know and keeps tabs on their growth, recovery, and development. This begins her journey to learn her purpose as she begins to grasp that her ties to these teenagers goes beyond random weirdness. It's through their lives that Jessica learns about herself, as she watches the lives she literally touched continue to interlock.
Publisher description retrieved from Google Books.