Bibliomania

It's an ordinary day at Eleanor West's Home for Wayward Children--until the girl falls out of the sky and into the turtle pond.

The girl, whose name is Rini, is looking for her mom, Sumi, who died in the first book in the series. Because of this, Rini is slowly disappearing. This sends some of the kids off on a quest with Rini, to bring Sumi back so Rini can exist. The trip leads them through great peril and into several worlds.

This is a very good novel, and a very fast read. You should buy it so there will be sequels.

Sugar Sky is part three in a series that starts with Every Heart a Doorway, but it will stand on its own easily enough.