Whats a good name for this story?

Great! Your plot sounds really interesting. I would tend to combine a cover picture with the title. Have you read the book ' A path less travelled' [ recommend it.]. The cover could illustrate an angel with broken wings [if she's been an outcast because of her own behaviour then include a pierced heart]. the title could then perhaps be 'A Flight Less Travelled'. It seems you have found a different way to become an angel. Good luck and persevere as publishers can be blind to a good plot.