The Romeo And Juliet Code - Phoebe Stone
This was a light read that I enjoyed, and I definitely suggest it for younger readers. Felicity, or "Flissy" as her newly-met relations call her, is a young girl with spunk, and I admire that. She just won't take "no" for an answer. If she's going to hold on to her sanity while the world is tangled up in the insanity of WWII, she's going to need all the courage she can muster, and she has plenty of it to get her through.