Through the Darkness by Stacey Wilk

Mackenzie Scirocco grapples with the daily challenges of being a single mother of five-year-old twins and the responsibilities of running her bakery. Some days she fools herself she might keep all the balls in the air. Especially when the man she’s had a crush on asks her out. But her world crashes around her when her ex-husband fights her for full custody of the boys.
Captain Phoenix Egan of the Water Course Fire Department protects the people of his town. When he gets trapped inside a burning building, he can’t save himself from the consequences. His physical wound is nothing compared to the emotional one. And he has to keep that secret to himself or risk his career.
Mack battles her feelings for Phoenix because a relationship now will jeopardize her custody case. But Phoenix shows her passion and kindness like no other man has. Phoenix wants to give her the space she needs, but she’s the only person who makes him believe he can be whole again.
Mack and Phoenix must learn to trust themselves and each other in order to find the way to love and happiness. Or everything they hold dear will be swallowed up by the dark.