I had a real stage school voice and I could do loud things, but it's not about being loud, it's about sensitivity and subtlety in music. You can do so much more with a quiet voice than with a belter.
I'm of the school of thought where, if you can't sort something out for yourself, no one can help you. Rehab is great for some people but not others.
I'm always happy to blow up any misconceptions that people have about stage school cos everyone thinks it's really nasty there but it's not.