I just re-watched Red John's Rules. After Patrick calls the number written on the wall at the murder site, he says "Child Protection Services Carson Springs...well when I was a kid, I spent a little time there". It just occurred to me that is when the "happy memory" could have been relayed. They keep records no doubt on the children who come through there. I've been racking my brain about the "happy memory" and have previously thought it was discovered when he was institutionalized, but it makes more sense that it could have come out say with a therapist when he was younger and that he forgot about it. The files would be easily accessible to Ms Gotlieb. Also something that really stands out to me is when Patrick and Lisbon are talking in the car, he says "Assuming Lorelei is telling the truth...". Why didn't he say, "assuming Lorelei was telling the truth"? Can't wait til the new season!