Get your daughter way from that kid as fast as you can.
| I don’t even understand if it’s an actual religion or one of those pay-to-level-up self-care courses.
yes, at about a ratio of 1 to 8. There's a mythology that these people fervently believe in, but pay-to-level-up is the core tenet. Distilling this down a bit, they believe that any problem you have is a ghost of long dead aliens clinging to you, and with enough abuse they can be scared away leaving behind the pure human.
When first you encounter them they seem to be offering self help courses or books. "Having trouble quitting smoking? Buy our book, join our class." For some these do genuinely help, if through no other mechanism than peer pressure. Then they pull out a bullshit device called an E meter and start talking about alternative therapies to realize your true potential, and then they've got you.
They are a high control group; they're like Mormons on amphetamines. Your life is centered on the church, people are kept in line through threats of destroying their families and support groups. They're particularly vindictive and are well documented to attack anyone critical of them.
Avoid these people with extreme prejudice, they are genuinely dangerous.