His to Protect by Jewel Allen

They’re both running from their pasts…right into each other’s arms.

When Lake Powell’s newest firefighter, Gage Jones, saves Maya Drake from a houseboat fire, he’s instantly smitten with her mischievous green eyes and sassy attitude. Until he discovers she’s his grandma’s tenant–one his family has asked him to keep a suspicious eye on.
Maya Drake is looking forward to a fresh start cleaning houseboats in this tourist town. When Gage Jones rescues her, she wants to stay in his arms forever. That is, until he starts hounding her about why she’s trying to get close to his grandmother. The prickly firefighter can keep his distance. But it’s a little hard when his matchmaking grandma has other ideas.
When Maya stumbles onto something that puts her in danger, Gage may be the only one who she can trust. But can they breach the wall they’d put up to protect their hearts?