You guys are too paranoid. It's making me paranoid.
Seriously though, maybe she's always really, really high and keeps meaning to reply but then can't be assed.
I think the only way forward is for me to get high all the time, too. Seriously, it'll be for the good of you all. When i'm really high it's the only time I don't post loads, because i'll type out big long replies that I think make sense and then i'll read them back and they don't, or by the time I go to reply I forget what I was replying to. So I end up replying to more posts than usual, but never actually get as far as hitting the Submit Message button on any of them.
So maybe that's what's happening with this chick?