Heartguard Elixir Gone! Time for Vengeance!

Her father wanted the money in it. Her mother had spent years developing a heart medicine and meant to give the formula away rather than sell it, and he had her killed before she could. On the way out she left the medicine with her daughter. That is how the daughter ends up hunted by her own family. A man gets to her before they do and puts her behind him, then keeps her there whether she likes it or not. He knew her when they were children, from one thing that happened between them, and he has held onto it ever since. She does not remember any of that. What she sees is one more person who wants the formula, so she leaves whenever she can, and he brings her back and tells her again what he feels, and she goes on not believing it.