The Nine Lives Of Chloe King by Celia Thomson

A sixteen-year-old girl discovers she isn't entirely human after suddenly developing catlike strength, speed, senses and the startling ability to survive what should kill her — she has nine lives. As she struggles to control her new powers and keep them secret, she must juggle high-school friendships and romance while unraveling family secrets and facing a dangerous, shadowy group determined to hunt her down. The story follows her race to understand who she really is and to protect the people she loves before her ninth life runs out.