This school is upper middle class, mostly white, in a very nice, upscale, and largely Conservative and Christian community in Orange County, California. Whatever the reasons for this tragedy, it is unlikely that social issues in the community had anything to do with it.
I know the neighborhood and it is as you say. Assuming suicide she really dumped on those kids. I have little sympathy for such a person.
We used to play El Dorado in summer league basketball games at Valencia High in the 1970s.