There is no point in thinking of what if scenarios, we would be here all night if we did that. After all, what if the killer had stayed in the armory? Would they have just clashed there sooner, and it still would have been the same fate? Sidon-sama and I were very serious about staying in the restroom every week, because it was funny, so what if we just decided to keep doing that?
[ knowing that is apparently where ashe died... ]
Unless you were the one who did it, do not blame yourself.