The lady of the lake

"After walking through the portal in the Tower of Swallows while narrowly escaping death, Ciri finds herself in a completely different world... an Elven world. She is trapped with no way out. Time does not seem to exist and there are no obvious borders or portals to cross back into her home world. But this is Ciri,the child of prophecy, and she will not be defeated."--Provided by publisher.