First of all, was the child close to death? If this was just a regular surgery (I know it says emergency but plenty of emergency surgeries aren’t life and death), this could have been from anesthetic or even a dream. If it was a real near death experience, then there is some kind of message about grandma, but I wouldn’t presume she was evil and went to hell. I wouldn’t know what to think. The afterlife is probably pretty complicated.
“this could have been from anesthetic or even a dream.”
But the “story”,,, if true, relates that;
“He was able to repeatedly name and describe every deceased relative he had spent time with in heaven, even ones he hadn’t met during his life on earth.”