Very interesting piece! I just love the specimen jars and the story of collecting that I find in here... I looked at the shelves in the background of the first one for quite a while... very creepy and your style sets the mood for it nicely.
I think that you have an anatomy issue on the feet though. I did a quick paintover to address the issue. It looks like the big toe is on the wrong side of both feet. It's a tough and twisted pose that you have picked for sure.
I did some sidebyside work here and I hope it is ok that I did so. I think you have chosen a VERY challenging lighting scheme for this work. You have a lantern on one side of the room and some hangy-down lights in the rear of the room. This would make the front of her face lit while the side of her face and body (her left side) hidden in shadow. Since the lights are further away from the collector, I thought the room would be darker overall and that the direction of the shadow under her chair would change... similarly, I think there is a tricky, secondary shadow that would be here and I don't think I could do it justice right away... multiple light sources are a bear sometimes.
Bringing in more shadow and darkening the whole piece selectively really makes the room look more mysterious and dark while maintaining some of the disturbing beauty of the woman in the middle.
I am still very intrigued by this piece. So nice.