Mr. Pines
Thank you for sending your children to see me. I don't know where they got this stuff, they must have a pretty active imagination. But as for their mental stability, they are fine. Basically, they aren't crazy, they just these experiences up. But I do have to tell you something.
While I was interviewing them separately your son said that he had been having a lot of nightmares recently; all with a recurring character. I would have ignored that except for the fact that he said that he thought he saw him in real life. I had him sketch the character and I've identified what is wrong.
He has begun to suffer a mental disease called Lychaphrenia. It happens when the subject sees something extremely disturbing. It creates a character in their head that stalks them in dreams and hallucinations. Symptoms include paranoia, hallucinations, BPD, and an extreme fear of the aforementioned character.
He will be required to take daily medication, and additional medication every time he sees the character. Another thing that might help is sending him somewhere else, but where he's been before. Like somewhere he's gone to on vacation. I would also like him to continue therapy.
My Regards,
Doctor Milo
P.S.
Maybe you should send them back to Gravity Falls this summer?