No Angels for Christmas (Mystery Angel Romances #2)
Petie McCarty

Police negotiator, Lt. Jake Dillon, walked away from his fiancée Rachel when she suddenly balked at having kids. His kids. Yet when the hostage crisis erupts, Rachel calls Jake first. Now he has a choice to make -- stand back and wait for the cavalry to save Rachel or step in and try to save her himself. Time is running out, and Jake may be their only chance for rescue.
Unless Rachel's little angel-spying client is telling the truth…