People post things online that they would never in a million years say in real life, or think in real life but never actually say out loud. Social media allows us to say what is on our mind in the heat of the moment. All with mostly complete anonymity.
Yeah, it's a phenomenon noted a decade ago as the Internet Fuckwad Theory. Or the Online Disinhibition Effect. Not attractive, but it's evident wherever people congregate online.
I disagree with those arguing that her decision to send those messages is equivalent to the McCanns' to leave their kids unattended. She chose to do something inherently vile and nasty, believing nobody would ever know, and then couldn't face the humiliation of public exposure. I don't lack sympathy for the pain she must have been in to take her own life, but what she did was morally reprehensible. The McCanns did something stupid, not inherently vicious or nasty, and the price they paid was horrific. I can't believe people are comparing a stupid mistake with intentional viciousness on that scale, and nor can I believe they are comparing public humiliation with having your child taken and God only knows what happening to them. In case it escaped anyone's attention, the McCanns have been accused of far worse than this woman ever was, and far more publicly, and it seems certain the accusation was unjustified, and that was on top of the loss of their daughter. She then chose to pile more on their shoulders. There is a basic lack of logic in comparing her action and the consequences with what the McCanns did and what then happened to them. One act is stupid but not malicious, so morally neutral, and the outcome horrific beyond imagination. The second was malicious to the ultimate degree, so morally wrong, and the consequences only the more minor of what happened to the McCanns. How are they comparable?
Having said all that, it's still sad someone has taken their own life. She's not a serial killer. And her kids must be going through hell.