A Snapshot of the Past

I'M NOT DONE YET! (:
14 year old Taliath is on the Willis Tower with her best friend when it falls, and Will(her friend) pushes her to the side so she doesn't get hurt, and in the process falls and dies.
Then, Taliath is blackmailed to turn into a spy to figure out who has been hacking NASA, right when it is one the verge of proofing alien life.