The good old 'mate teaching mate' is becoming all too common. Unfortunately I'm seeing incidences such as this one regularly. It amazes me that people will take professional diving lessons realising the potential dangers but fail to recognise what can go wrong with a kite. Wake up people, being a good Kiter doesn't automatically make you competent to teach.
What's even sadder about that video Chris, is that they are instructors - not her friends. 
Jeez you'd think someone would grab the kite at least.
Was she hurt at the end? Hard to tell and it seemed pretty gentle, wind can't have been more than 12 knots.
This looks like a good lesson to me, heaps of room down wind and super light wind with multiple people watching her (possible could have s helm on and in deeper water).. Saw much worse just this morning on the Mandurah estuary r.i.p 7m rebel 
Holding the bar from behind the student has to be the most idiotic way of teaching anyone to kite. Lets hot launch the beginner then let go...
whenever I see this technique it always ends up with a kiteloop!
I'm hoping this is an older video , by the looks of That bar it's the old cab suicide bar ! For a student the leash should have been connected to the flag point above the bar not on the chicken loop !!
I taught myself.
Wouldn't advise it, unless you have good water competency, and a world class sailing history.
I struggled with board control, but my kite control was quick.
Got a buddy who is a dope wake rider, but can't control the kite for ****e.
Its that age old discussion on 'lessons vs no lessons'.
Been there done that.
But I am a better kiter than most who have done lessons. Coz I've made & done every mistake in the book, and now know how to get out of them, and what not to do again.
I self launch when the old kooks whine & whinge about it. Think they called it 'the idiots way' last time they saw me...... But that's why they wear helmets I guess!
Think its all about knowing your limitations.
