I believe that singing and stagecraft are highly misunderstood, and the art of teaching these essential tools is critical. You need a sensitive, wise communicator, motherly and experienced, because singing is one of the most emotional arts requiring technique yes, but personal blood sweat and tears. It can provoke powerful emotions and you can lose confidence easily in the presence of bad coaching.
I trust Glenda implicitly in being all the above. In fact I've never met a calmer dearer person. I think would be a privilege to be trained by her... also good bloody fun!