I'm not entirely sure that I know what "the norm" is.
I'm also not sure what "especially with AVRT" means. What I do know is that all the studies show that the recidivism rates are dismal in organized programs, and evidently that is largely because people quit going to them.
Actually, I see AVRT as an extremely good fit for young, highly intelligent people like April. An even better fit than organized programs, since young, highly intelligent people are often the least likely to become regimented into anything that requires even a little bit more of their time.
Again, my opinion.
FT