That's so much of a terror 😔
The boy story is little hard to believe but if by any chance if its true then its such a shame to the parents for getting their child to such a stage.
I wish lots of peace and comfort for all of you my dear and may you all get strength to get out of this trauma at the earliest, specially your nephew. He's a very brave boy and I am praying he gets back to normal soon. It would also be important that his leg is treated at the earliest
Love and Hugs