When her eldest brother got his girlfriend pregnant, her mother learned from a vision that the girl was a witch, and had used mind control to force him into sex in an effort to infiltrate their christian stronghold. There were stories about how the youngest brother had once, foolishly, brought a piece of fantasy art (a picture of a dragon) home. And sure enough, in the middle of the night, the dragon came out of the picture and tried to slither into the boy's bed. His cries woke his parents, who investigated, and sure enough there was an evil aura coming from the picture. They burned it while praying, and then had a preacher come bless their house ASAP the next day. There were several other stories, equally silly but not as entertaining.
One difference is, it seems that Stan from this article worked mostly alone, but my girlfriend's family was part of a large church community who ate all this shit up and asked for seconds. When I visited their church, it seemed like everyone had their own stories to tell about personally witnessing supernatural assaults. The community all fed off of each other, and they got so excited at having a new person to share their stories with.
I guess that's why the DSM, when describing delusional disorder, specifies that "The belief is, at the least, unlikely, and out of keeping with the patient's social, cultural, and religious background." Don't want it to seem like they're starting a holy war.
The funny thing is, when I was telling my mother about the things I heard at my girlfriend's house, I literally described it as a "whole weird world".