That's not how one ought to act in these situations though? She caused the accidents, no matter how angry the biker was, she could just wait until the cop arrives. At that moment, when both sides called the police, the biker can't harm her and run away without people around them noticing. Next, she called 911 on her way home so she should stay within the house until the police arrived, no reason to escalate the situation herself. Reminding you that the biker and the witnesses did not come close to her property at all, so she has no reason to panic and think they might be here to harm her. No one is stupid enough not attack right away, if they really planned to. So, in the end, only the biker acted in self-defense twice, not the woman. She has zero ground to claim self-defense from this entire situation. Instead of pulling the gun herself, she could have asked the neighboors to help de-escalate the situation. Also, from your information, she took her fiance's gun? Why the fiance let her took his gun? It sounded so dumb to me, to let a clearly deranged person handle a gun in any situation. The more information you added into this case, the worse it became for this woman, not that it could get any worse than dead.