Her proof was that the psychic told her that she was going to undergo some kind of career change in the next six months to a year, then she did. My sister is in her mid-20s, so I said, "Of course she said that, she is playing the numbers. A career change could be anything from a promotion, to changing jobs, to a reassignment, to moving locations. It's a safe bet that somebody in their 20s will experience career changes every year." At which point, my sister told me I didn't know what I was talking about, because she had been working for the same company for six years, and only left after that. I was aware that she had changed jobs at the company a number of times, but didn't think it was worth pursuing.
She continued though, and told me that a hypnotist had come to her office Christmas party to put on a show, and explained to her that people like me are not susceptible to hypnotism or the paranormal because engineers aren't able to free their energies or spirit or some such tomfoolery. Secretaries and managers are usually the best at freeing themselves. She went on, explaining that the hypnotist "hypnotized" the audience to select the person they would have on-stage, by convincing them to raise both of their arms, then selecting the person that raised their arms under hypnosis the highest, because they are the one with the greatest connection. Of course, she had the greatest connection to the hypnotist, so was called on stage. At that point, all I could do was laugh and exclaim "Seriously?" Our dad just kind of shook his head. Hold your hands up high if you're a sucker.