Cynthia Leitich Smith
Check out the book trailer for Mary's Song by Lee Bennett Hopkins, illustrated by Stephen Alcorn (Eerdman's, 2012). From the promotional copy:
On that first Christmas night, the Earth bursts with praise at the Savior's birth. Donkeys bray, sheep bleat, horses neigh, and shepherds come from nearby fields.
But Mary simply wants to be alone with her sweet babe. When quiet finally falls, Mary cradles her son and sings her mother-song.