Your post said if he was doing 50 or 55..He wasn't. You're assuming that she would have been in the intersection with him doing 55..The point is, he was doing 110, according to the reports, she had .5 of a second to see him before she went through the intersection. Can you judge speed at the distance he was from her? If he was doing 50 to 55, she would have been through the intersection. If he was doing 100, she would have been through the intersection. Saying after the fact that hitting her broadside at 55 would have killed her is a strawman argument. Without a doubt, she would have been at fault then.
Facts speak for themselves and its irritating as hell when the 'what if' game is played. I will go to my grave knowing that 110 up that hill into Dunkirk was totally wrong no matter what the situation. Cops have a hard enough job without lame explanations/excuses given, as far as I'm concerned, you're not doing any LEOs any favors.