How Priscilla And Lisa Marie Presley Got Into Scientology

I always find it interesting to discover how someone got into Scientology. For me it was someone asking me some survey questions that I found intriguing so I bought the book Dianetics and then took the Success Through Communication Course. But how does someone like Priscilla Presley come across it? It's not like she's walking down the street and wanders in to do a personality test. So it was interesting to find this article. I guess they got it from an interview with Lisa Marie while she is out promoting her new album: Travolta Credited For Presleys' Interest In Scientology