Victorian Age children always creep me out.
I think it is how they are so often portrayed as little adults rather than what they actually are (i.e. children).
Add to it a Victorian penchant for the contrasting youth and death, innocence and obscenity and you get stuff like this photo.
The fact that her eyes are almost completely black, like some satanic little squirt, also adds to the general all round creep-fest motif.