Yotsuyu, the irredeemable monster

[DPZ2]

and the people of Doma were responsible for how she turned out.

This can be so only if you are a pollster, using a minor subset of a group to predict behavior of the group as a whole.

The fact is, there are exactly three people in Doma who bear responsibility. And the proper response, if revenge is desired, would be exact vengeance on those three people.