HaBO: She Goes Undercover at a Ranch for Troubled Teens

Help A Bitch Out This HaBO comes from Karthika, who is looking for this category romance: ​I am trying to find a romance novel I read a while ago. It’s a category romance (most likely Harlequin Intrigue or Silhouette Intimate Moments) published before 2005 (probably late 1990s or early 2000s). ​Here are all the specific details I remember about the plot: ​The setting was working sanctuary/rehabilitation ranch in Texas for troubled and rebellious teenage boys and girls, run by the hero. ​The heroine (a counselor, social worker, or investigator) takes on a case involving a teenage girl who was severely abused. The victim is deeply traumatized, shuts down, and cramps up, refusing to tell anyone who her abuser is. ​To figure out what happened and find the culprit, the adult heroine goes undercover at the ranch posing as a rebellious, troubled teenager. She doesn’t wear a complex physical disguise; she just acts and carries herself like a rebellious teen resident to blend in. ​The abuser isn’t an outside adult; it’s a long-time resident teenage boy living at the ranch. He has developed an unhealthy, violently possessive attachment to the hero and actively targets/assaults any female who...