The only school shooting that I am familiar with was the Red Lake massacre. 

That perpetrator came from a very abusive Family and was being cared for by his grandfather, a policeman. 

He was schooled at home and on psychiatric treatment, but spent a lot of time on the computer reading neonazi sites which probably just encouraged his rage. So one day he shot his grandfather and got his rifle and shot up the local high school.

Was he bullied in school? Probably. High school bullying is alas common, and bullies pick the vulnerable. Nor is this an American phenomenum: Dozens of K Dramas have this as a theme.

But it wasn't agains the bullies: It was inner rage that exploded.

Usually people have defenses to stop acting out on their impulses, and the irony is that often therapists, who tend to agree with the person when they are angry, end up making the mentally ill person think that the therapist is giving permission to them be angry, (and if they act on it, well it's okay).

Psychotherapy is often viewed as benign, but it does have side effects, and one of them is removing a person's defense mechanisms. In this case, rage against a scapegoat, but sometimes it leads to suicide or a psychotic episode.

So my first thought was: Who was her therapist? 

This was planned in detail: Not just where to kill but also how.

This brings up questions of how did a girl whose family was Anti gun learn to shoot? Where did she practice using the weapons? And where did she buy body armor? 

So the second thing I thought was: Who helped her?

and then there is a question of medication: Depression is anger turned inward, so again if you add an anti depressant, the anger often comes out of it's box and causes rage incidents. These are rare, but a known side effect that needs to be monitored. Ditto for anti anxiety and anti psychotic medicine. 

Good therapy works with the person, makes them aware of these side effects, and how to cope with life as their repressed anger and repressed conflicts now come to the surface. 

So no this was not about being trans: This girl was 28, and only recently decided she was Trans. She was at the Christian school for three years, 15 years earlier. What about the other schools?

It sounds like she had a major mental illness that included inner anger, and since the trans idea is the idea de jour being pushed to trouble teenagers this year, she fixated on the trans part.

To make things worse,  recently these troubled young people are being manipulated by the social justice warriors who are pushing radical trans violence, and she saw killing normal people who are Christians and tried to live by their beliefs as something good. She was also suicidal, and seemed to believe she could do this good deed while committing suicide by cop.

Here in the Philippines, trans and cross dressers and baclas and tomboys are accepted as part of the family, in the same way second wives and accepting gifts by those you help is accepted: as long as it is private and it doesn't go too far, no problem.

So when a US military guy killed a trans prostitute when he discovered she was a he, the stories (except in the US puppet press of Makati) lamented the death because this lovely bacla was supporting her extended family by her work, and didn't deserve to die.

in contrast, The internet pushes hatred of the other, and it's not just tictoc that is pushing abnormal behavior as something good: Jerry Springer anyone?

So why now?

There is a good argument that this mental problem is being weaponized to destroy the idea of the family and sexual differences. 

It is so radical that even Pope Francis and the US Catholic bishops have spoken against this agenda,  because in Catholicism the body is seen as good, and God made men and women and that this idea is the basis of healthy family life.

Catholics also have a long standing opposition against mutilating the body for frivilous/ non medical  purposes. 

The MSM and catholic libs who run much of the anti catholic "Catholic" press have either ignored this dogma, and ignored the longstanding Catholic idea that mutilating the body is a sin: the policy is mistated it as being against trans healthcare, ironically at a time when it is the medical establishment in many countries that is turning against the policy of using drugs and surgery on immature people to change their sex.

Sigh.

and don't forget the side effects of many of the hormones and anti hormones given to these childen. I took some of them for medical problems, and their side effects are significant: hormone blockers made me cry, (think menopausal ladies) and testosterone like medicine made me fat, hairy, horny and prone toward anger (a side effect for men using testosterone drugs for sports etc.).