You dont even know if she was murdered or died from an accident. As for vengeance, what vengeance is there to simply point to facts of the case? Does truth somehow threaten you?
Yes, we do know she didn't die from an accident as there was no evidence of an accident. You haven't pointed out any facts to prove it was an accident either. Let me know when you have any facts (truth as you call it) to prove otherwise.
You seem to have a lot of time on your hands to call people names such as vigilante, etc. to try to silence them when they don't agree with you. The only vigilante, so far, has been a male Casey supporter who punched a woman in the face.