Maybe this is a troll, maybe it's some other kind of being. I think she's feeling lonely and a bit sad, maybe she is a being that people fears a little bit.
I wanted it to look lonely, that's why there are only two trees in the background. A friend told me it looked like there should be a forest in the background, but it's gone.
And well, if you're used to have a whole forest, of course two trees would feel very empty.