Clips from 1985 episode of 60 Minutes looking at the alleged harmful influence of Dungeons and Dragons in the murder/suicides of several teens. Part 2 ends with a follow-up on Dr. Thomas Radecki, who became involved in another controversy a few years later.
Sadly, Pat Pulling died in 1997. I've found no information that she ever changed her opinion about the game or its effect on her son. As mentioned in the story, I suspect that this grieving mother may have needed something to blame for her son's unfortunate tragedy.