Respuesta :
So I'm not sure but there is a book called "The Shimmering Doorways" but that might be to obvious.
Answer:
The name of the book is "Nil" by Lynne Matson
Explanation:
This story by Lynne Matson starts with the character of Charley Crowder when she is taken away from her home through a portal to a mysterious island, then she starts to fight for survival and later discovers that there are others like her and in fact they have a community, they all want to go back to their normal life but they only have a year o they will die.