On the other hand, like you said, the internet is a form of escape and relief. That escape and relief can take many forms. Repression of real life problems can, and most certainly will, have effects on how people conduct themselves online. The door swings both ways. The girl could/should of realized what forms people on the internet can take. It's sad, and I'll repeat that, it's sad, that you can't come online and expect the same respect and courtesy you can while at a restaurant or on a train, or in an elevator, because the fact is, the body is not involved. The body is not at stake, shown, and in being so, it is not held accountable. That lack of accountability/responsibility is, to many people, escape, and relief. From the lives they live, from the bodies they inhabit, from the issues which berate them to and from their jobs and relationships.

The fact is, until people can healthily deal with their problems in real life, they will continue to exhibit the behavior aforementioned. This is ultimately a very vicious cycle wherein people simply exchange bad energy that slowly becomes more dangerous. Although, your post is aimed at a very concise and simple solution, the reality is in in reality. You are not asking people to change their conduct online, you are, by extension, asking them to change the conduct of their very lives. Unfortunately, the internet will continue to be an outlet for such energy and behavior since it is so entrenched within our nature at this point. The wires and phones, electricity and wifi sink deeper and deeper into our psyches.

Welcome to the future.