A Hundred Wishes by Marianne Rice

After being badly burned from a roadside bomb two years ago, former Army sergeant Gina Fisher is finally ready to live her life again. She has found a sense of inner peace through her sewing, crafting, and teaching children online. Jobs that keep her at a distance from everyone but her sisters.
Arson inspector Bryce Cambridge has never been shot down so quickly or so curtly as he is by the woman with gorgeous brown eyes selling quilts. Luck is on his side when he runs into her at a bowling alley the next day. He’s intrigued and turned on by her smart mouth. The chemistry is explosive between them, and even though she tries to resist, the spark between them is too hot to ignore.
Those blue-grey eyes and charming smile have Gina lowering the wall she’s built around her heart. But as their relationship grows more serious, Bryce wants to see all Gina is hiding. The puckered, scarred skin and the shrapnel buried in her flesh are just the surface layers of the wounds Gina tries to keep hidden. But her deepest, darkest secret may be too repulsive even for someone as strong as Bryce.
Because his fears are her reality.