Her K-9 Protector by Kimberly Van Meter

A K-9 hero answers the call for one special assignment... 

When Kenna Griffin returns to Montana with her son, she believes she’s outrun her past. Having escaped her abusive ex-husband, the single mum is eager to make a fresh start. But nothing feels safe except the protection offered by K9 Officer Lucas Merritt and his fearless police dog. Because danger has followed Kenna to Cottonwood. Against all her instincts she lets Lucas into her life...though that just might kill them both.