Nate’s Gift by Jackie Castle

Nate would have never dreamed that one Christmas wish could jolt his deadened heart to life again.
Nate Cooper has lost his heart for his job and the holidays. After the death of a dear high school friend, Charity Hart, he’s called into the lawyer’s office, along with several other old school buddies and given a challenge. Take the $1500 and find someone to bless, but they must keep their gift a secret.
After thinking over the challenge, Nate can find only one person who has a great need. Unfortunately, she’s an annoying thorn in his side at the school where he works.
Kara Shay is on the verge of losing everything she holds dear: her drama class, a job she adores, and her chance at making a difference in the lives of the high schoolers she mentors and teaches. But Kara will not go down without a fight, and has a few resources up her sleeve, if only that annoying band teacher, Mr. Cooper, would give a little and stop being so obstinate.
Nate means well, but he has always taken the safer paths in his life. Helping the drama teacher is leading his heart into very unsafe territory.