You are ridiculous. They should not try to find out why 33 people are dead in a lover’s quarrel? They should not try to put the whole event together to assist the University in future security operations? do you think people are going to be satisfied with that? If you hada kid who went to class and ended up in a morgue, would you be satisfied with that?
You investigate to prove a case or catch a bad guy, not to have some psychological “closure” on an incident.
Which is in part why I believe the lover’s quarrel angle is bunk.