Grandma is influenced by TV or the local church or whatever and wants to forbid their grandchild DnD. Her son-in-law hates her and tells her to fuck off, explicitly allowing his son to do as he pleases (regarding DnD). His wife wants to pour oil on troubled waters and allows her mother to watch without disturbing the kids unless the satanism shows.
I can see this happen the following way:
Grandma is influenced by TV or the local church or whatever and wants to forbid their grandchild DnD. Her son-in-law hates her and tells her to fuck off, explicitly allowing his son to do as he pleases (regarding DnD). His wife wants to pour oil on troubled waters and allows her mother to watch without disturbing the kids unless the satanism shows.
Then the math induced rage commences.