Ultraviolet Series by R.J. Anderson

Once upon a time there was a girl who was special. This is not her story. Unless you count the part where I killed her. Sixteen-year-old Alison has been sectioned in a mental institute for teens, having murdered the most perfect and popular girl at school. But the case is a mystery: no body has been found, and Alison's condition is proving difficult to diagnose. Alison herself can't explain what happened: one minute she was fighting with Tori -- the next she disintegrated. Into nothing... moreOnce upon a time there was a girl who was special. This is not her story. Unless you count the part where I killed her. Sixteen-year-old Alison has been sectioned in a mental institute for teens, having murdered the most perfect and popular girl at school. But the case is a mystery: no body has been found, and Alison's condition is proving difficult to diagnose. Alison herself can't explain what happened: one minute she was fighting with Tori -- the next she disintegrated. Into nothing. But that's impossible. Right? less

Back in her hometown, Tori Beaugrand had everything a teenaged girl could want—popularity, money, beauty. But she also had a secret. A secret that could change her life in an instant, or destroy it. Now she’s left everything from her old life behind, including her real name and Alison, the one friend who truly understood her. She can’t escape who and what she is. But if she wants to have anything like a normal life, she has to blend in and hide her unusual... talents... moreBack in her hometown, Tori Beaugrand had everything a teenaged girl could want—popularity, money, beauty. But she also had a secret. A secret that could change her life in an instant, or destroy it. Now she’s left everything from her old life behind, including her real name and Alison, the one friend who truly understood her. She can’t escape who and what she is. But if she wants to have anything like a normal life, she has to blend in and hide her unusual... talents. Plans change when the enigmatic Sebastian Faraday reappears and gives Tori some bad news: she hasn’t escaped her past. In fact, she’s attracted new interest in the form of an obsessed ex-cop turned investigator for a genetics lab. She has one last shot at getting her enemies off her trail and winning the security and independence she’s always longed for. But saving herself will take every ounce of Tori’s incredible electronics and engineering skills—and even then, she may need to sacrifice more than she could possibly imagine if she wants to be free. less