Talk about some bad luck. Poor kid. It's sad that his sisters treated him that way. 

This was another interesting direction to take the prompt. A tragic, but fascinating story. I also really liked the picture you provided at the beginning. It really helped to set the mood.

There are some spelling and grammatical errors, so I would suggest combing through with a good spelling and grammar checker. My personal recommendation would be Grammarly or Pro Writing Aid. They have some great free features.

With a little polishing, I feel this makes a good story. Great job! Thanks for sharing! :)