Charlotte Sometimes by Penelope Farmer

What if you went to sleep in your bed at the boarding school and woke up forty years earlier?  Same bed, same school, but everything else is different.  Could you adjust?

NYRB Kids and Edelweiss gave me the opportunity to read this book for review (thank you).  It will be published May 9th.

Charlotte isn't sure what to do or how to do it.  She finds she has a sister just like she does in the present but now she's being called Clare instead of Charlotte.  It seems she and Clare have traded places.  As she begins to adjust and tries to fit in, she finds that they trade places several times.  She's planning on returning and staying when they move the two girls out of the boarding school to a home so they have more room for the sick.  Now the opportunity to return is gone...

She tries to sneak in the building one night so she can return to her time but she's foiled by too many folks moving around.  She's beginning to despair but she likes Emily, her sister in this world.  At last, she finally gets back to her time.

Clare was not as good a student as Charlotte was, so she has to do damage control there to catch her grades back up.  She also begins to wonder if Clare and Emily are still alive.  What would you do if you experienced such a thing?  Would you look for answers or hide from them?  Charlotte looks...