People I've read about involved with regression seem to regress to Princesses or high ranking individuals which strikes me as wishful thinking! My father trained as a hypnotist and could self hypnotise. He tried it on me when I came out in spots prior to exams [I hate exams] to calm me down. I think it worked over all but I still didn't do well in spite of my hard work! My mother was very susceptible to hypnosis - and she had a fragile mental state. She had all her teeth out under hypnosis and the level of bleeding was controlled by it too. Amazing. I think hypnosis is dangerous unless you are absolutely sure what you're doing. There are aspects of the brain yet to be understood and meddling can cause untold damage. Your friend should be told to steer clear and however difficult you might find it, you should not get involved.
Is there such a thing as delicious ready meals?