Miracles - I just happened to get a few

This book is about a girl named melanie who lost her life from a comma. Although she got a miricle, she came back to life. Now that may seem great, but she didn't come back until 51 years later, and everone she loved has died. And as if that wasn't enough, she has super-human strength that isn't really your usual superwomen. Then when things seem to be getting better, she meets david. davvid is the most beautiful thing on earth and....is just like melanie....different.