Hightide Breaking In Betty Today

By the end of the scenario, Betty is no longer the outsider. She becomes a willing participant in the villa's activities, often becoming one of the protagonist's most loyal (and transformed) companions. Her story arc is a classic "transformation" trope, moving from repression to total liberation.

Betty’s coastal home has always felt like a sanctuary. Until tonight. The tide is rising faster than usual. The doors are locked. But shadows move through the hallway like water under a door. Hightide Breaking In Betty

If you want, I can expand this into:

Defeat Betty by using debuffers to stop her from shredding your defense or by dealing high burst damage to kill her before she enters her "enraged" state. By the end of the scenario, Betty is no longer the outsider