Dragon Whisperer - Fireborn, #1

A fantasy novel full of mystery, magic, dragons and romance. Dionelle is unique: she was born immune to fire. Shortly after marrying Reiser and moving to his ranch on the outskirts of a large city, a corrupt noblewoman forces Dionelle to work with dragons in order to keep the peace in her kingdom. Being a dragon whisperer strains Dionelle's new marriage because Reiser is terrified for her safety, while Dionelle grows to love her task.
But when Dionelle suddenly goes missing, Reiser forges an allegiance with the very beasts he fears, Dionelle's beloved dragons, in order to find her.