When I was a teen, a cute girl approached me in San Francisco and tried to recruit me into the Scientologists. Would have been about 1973.
I know a guy, a formerly close friend from college, who reported exactly the same experience! He went out to San Francisco in the summer of 1973 (the summer before he started college) and met a really beautiful girl who was super friendly and nice, but he realized after talking to her for awhile that she was trying to recruit him into some cult. He thought it was scientology, but wasn't 100% sure.
That might have been the same girl!