Thinking a bit and remembering what the ring of Possession/BodySwap said, you decide the best way to exert your vengeance is to put on a two time act.
First, you waited for Kaitlin, your oldest sister, the one that was the worst with you, to take David to an isolated place to try and seduce him far from your disapproving mother to possess him. Then you gave a violent slap across the bitch face and claim "As much as I hate your brother, I can't stand someone that treat their own family so wrongly!" and storm off wile slowly unpossessing him, hoping it would make the Samuels' son think it all came from himself.
But you didn't stay to make sure, you had a far more important mission.
Instead, as soon as you were back in your body, you exchanged it with Sarah Newson. While Charlotte was descent with you when you were alone, Sarah was the main reason she wasn't when the rest of your family was around and also why she was almost always agreeing with your mother, or at least pretending to. It was time to remedy that and make her have a taste of her own medicine. Thankfully you knew Sarah well enough to make everyone think you truly were her.
So when you saw your former body furiously stomping in your direction you were ready to make everyone think Jacob Harrison has either created the stupidest scheme ever, or fallen into total madness.
… Until your dog came along and interposed itself between the two of you, snarling at the girl trapped in your old body.