Beyond (Afterlife book 1)

Meghan is 16 when she dies.
She wakes up on a flying steamboat on her way to a school run by Angels in a white marble castle.
It is a school everybody has to go to before they are let into Heaven.
On the boat she meets Mick who has been dead for more than a hundred years but still looks like a teenager. He helps her past the difficult beginning at the new school in a new world.
One day some of Meghan's roommates find a mirror in the cellar of the school and they persuade her to go through it wi...