Harlan,
I had an experience a while back with one of my students. She is a forty something mom with 3 kids. She caught me one day after class and said

" I just wanted to say thank you" I asked what for? she replied "Your teaching is different. You are the only one here that is not afraid of hurting me. Everyone else treats me like I'm going to break, thank you".

I'm smiling just recounting the story.