It's interesting how the article leads with her father on how the perpetrator was failed! Why the sympathetic coverage? Because of her sex? Age? Race? How do we feel about calling her 'scum'? Is it harder than thinking of that monster in Belfast as scum?
For what it's worth, they are both monsters in my eyes. Her mental health is no excuse, and any past trauma the perpetrator in Belfast may have experienced is no excuse. The vast majority of mentally ill and traumstised people are a risk to themselves rather than others, and neither factor explains why these monsters chose hatred.