Song of the Sparrow by Lisa Ann Sandell
Elaine of Ascolat is the only girl living in the military camp led by a young, soon to be king, Arthur. She is secretly in love with her friend Lancelot, tries to befriend the uptight and conceited Gwynivere, and confronts her jealousy for the betterment of the nation.
I am pretty tired of retellings this year. This one didn't strike me as anything terribly noteworthy. Nay