Ranger Guardian by Angi Morgan

They've been estranged for months, so Texas Ranger Heath Murray is surprised to be partnered with his dedicated FBI agent wife, Kendall Barlow. It's the case of Kendall's career – a career that has divided their marriage, though not their attraction. When their young daughter is kidnapped as a pawn, they have only each other to turn to. Saving her together is their only option – the alternative is unthinkable.