Classically terrifying design, the kind of deformity that would stop your heart in a point-and-click horror!
The way you've achieved the pixel-based blood is perhaps my favourite element, but overall you've done some grand work regarding her pose and mutilated torso. Also, 'The Broken Siren'? That name is radical!
May I ask how long this took? Also (kind of interrogating you here, haha) what program did you use?
I'm a super-newbie at pixel art and I have to design some game backgrounds/sprites in this kind of art-style. It does entice me enormously, though.
Keep it up, and I'm going to check out your movie, too. Sounds fun. :D
5/5