Demelza Carlton 
Roar — Goldilocks Retold [EPUB ebook] 

Three bears. Two enemies. One winter that will change everything.
Once upon a time…
Ursula thought her biggest worry was hiding her magic powers long enough to catch a husband, until Lord Vauquelin invades and slaughters her whole family. When she emerges from hiding, she finds she’s snowed in with a wounded enemy soldier, in a valley full of bears.
Can a girl who can’t even make porridge survive until spring?