IDK about LDS specifically, but that's not unheard of, esp with Harry Potter. LOTR though is odd because Tolkein was devout Christian.
I used to play waaaaay back in the day with my cousins. Eventually, the oldest sister didn't want to DM anymore (that was the other problem with D&D in the 80's...it's unparalleled properties as a vagina repellant ) and things eventually fell apart as 2 person games get lame.
Im surprised at the Christian connection because I had a boss from the LDS community. Harry Potter and LOTR (I thought Star Wars too?) were explicitly banned by most parents for promoting the occult.