Volo, you shouldn't get too worked up by someone calling a tree a tree, he has your persona pretty well down, no need for your stale "I need cake and to eat it to arguments."
As far as I see things, the woman is definitely guilty of harassment. She purposely misrepresented herself to gain the trust of another and then left messages who's only intent was to be disturbing to the reader. I'm not sure what the statutes for the different levels of harassment are but I think something along the lines of losing two years of her freedom would be appropriate.
She has a level of culpability in this girls death, but in the end its never one factor that causes someone to commit and act like this. People's lives are not linear, and you can not be totally responsible for how people interpret/internalize your actions.