The Melody of Christmas by Jess Van Kamp

If Melody Parish could have one wish, it would be to get married and start a family—just as her two sisters, and most of her friends, have done. Instead, Mel has a different fate: a mystical power she discovered in her childhood enables her to grant people their deepest wish every year at Christmastime—for anyone, except herself. Mel has learned that people’s wishes aren’t always what is best for them, and their motives aren’t always pure. Now that she is thirty years old, she is disillusioned and discouraged, tired of granting everyone else’s wishes but her own.

Dr. Mitch Westicott has a wish—but it might have come too late. After years of taking his fiancée and son for granted, he wants nothing more than to win them back. When a chance meeting with Mel leads to a friendship that puts him closer to getting his wish than he even realizes, he finds himself unexpectedly drawn to the energetic, friendly, charming girl with a torn ACL. But witnessing the undeniable chemistry between him and Melody may be just what his ex needs to be convinced to give him a second try.
Melody never grants a wish unless she truly believes it is the right thing to do, but now she is afraid she can’t trust her own heart. Will she regret it forever if she gives this little family what they are wishing for?