Kudos for posting a full lesson and features a real student. The real take away is it takes time and reps to build a technique. We live in a world were people think they can teach (or learn) everything in 20 seconds "shorts" video.
The contact at 45 degrees (135 degrees from chest) is dependent on the semi-western grip she has. If one uses an eastern grip, the contact point should be around zero degree ( 90 degrees to chest). The door knob wrist action needs perfect timing and may be too advanced for recreation players ( but something to work towards). The footwork stance is a neutral stance and is a good reminder that close stance ( left foot goes too far to the right) will jam your body. Montaguaru has a video on open stance and should be kept in mind. This is a very good video.
Paying close attention to every shot of the student and even though she is pretty advanced not letting her go with small minuses technically without addressing them with going back to shadow swings, small progressions and feeling the move. Really great lesson!
It's a good thing there's no audio this guy talks actually too much For my taste hes a good coach but so much conversation. kids don't hear tne noise. all that stuff being saying More for him than her. Just my opinion