My opinion (for what its worth! LOL) is that he was playing a 'coach' role and simply trying to motivate her to push thru her lethargy. Coaches do that all the time. I think you're making a big deal out of nothing...and maybe looking for an excuse to terminate the lessons. You don't need an excuse! Just terminate if you and your daughter feel it's not a good fit! No need to make him out to be some kind of villain just because he's in NA.