I'm not going to speculate about what really happened. We'll never know, sadly, because everyone involved bahleeted their LJs without stopping to explain themselves, the little fuckers.
You have to ask yourself though, is "Maria" really gone? Will she resurface in some way, shape or form? Let's not forget that she can come back at any time. As anyone. Will fandom (specifically SV fandom) be waiting for it? Will we wonder, every time a noob makes an impression, IS THAT MARIA? Would she even *dare* show her face here again now that she knows that people in fandom are jaded and cynical and know how to trace IP addresses? OTOH, can someone that active in fandom (in 6 months she made THREE HUNDRED friends - that's staggering) really just give it all up? We all know how addictive LJ is and we know that Maria was online *all the time*. We also know that Ms Scribe didn't disappear and is still on LJ under a different handle (the name of which escapes me now).
I don't think we've seen the last of maria anyway.
And on that note, sleep well, fandom!