The Flower Garden

I finished writing a book this year. It's called The Flower Garden and it's about a princess who discovers she's half fairy half vampire. She travels to Fairie Mountain, where all the fairies live, passing through different troubles on her way. I started writing it a few years ago, so the begining is very different from the end. I'm fixing it up, but I wonder if it's even worth it. What do you think about the plot? Any comments would be useful.