Lone Star Redemption by Delores Fossen

Former military special ops officer and head of Strike Force Security, Owen Striker has spent three long years haunted by the disappearance of his beloved niece, Brynn. Despite the tireless efforts of Owen, Strike Force and his rival team, Maverick Ops, Brynn has never been found, and unanswered questions about her fate are a wound that refuses to heal. However, when Brynn’s DNA is found at the scene of a grisly murder, Owen can’t believe Brynn is a killer, but he intends to use the murder and the investigation to finally track her down and bring her home.
More than a decade ago, Ruby Maverick, made a promise to Owen’s dying sister that she would protect the woman’s only child, Brynn. But when Brynn disappeared, even the entire efforts of her Maverick Ops’ team didn’t succeed in locating the person she’d sworn to protect. United in their grief and guilt over Brynn’s disappearance, Ruby and Owen have battled an intense forbidden attraction to each other for years, but now they must set that aside and work together to unravel the sinister web of secrets surrounding Brynn’s disappearance. But will Ruby and Owen’s quest for redemption lead them to salvation? Or destruction?