the romance novel Silent Witness by Kay David. It was published by Harlequin in May 2004 as part of their SuperROMANCE line, specifically issue #1200, and is book 2 in the "Code Red" series.
The story is a romantic suspense novel. It is about a paramedic named Andrea Hunt who moves home to Courage Bay to start over, but her life changes when a tragic accident leaves her responsible for her nephew, Kevin, a young boy who copes with the trauma by not talking.