I like the focus on the inside leg, which is not common at all in coaching (like the kid said, he'd have thought she was crazy). Shorten the inside leg to get angles, don't shuffle too much, pay attention to level the hips while shortening the inside leg, all good things. Also the coaching, engaging the athlete via questioning etc, very good.
However, both of them bring up no foot focus to compensate the knee focus, I think the ankle is mentioned once and if you watch the skiing, the kid skis with the upper leg, no foot focus in this clip, going up and forward, which is par for coaching GS.
Also, the reference to natural lead, as if it's all passive - which it should not be - it is corrected in a follow up video talking about closing the ankle at the same time, which is how you limit the shuffle / keep the foot back while shortening the leg... but without making the connection.
The lateral aspect of "the drive" is not mentioned at all, the bend the pole drill, wich is great, is in another video. It's important to not let the hips get into the turn first, so if we put everything together, we could summarize the cue as to drive the knee up, forward and into the snow, if we were to use the knee as a cue, which I don't personally like to, because it's an artifact of other actions not an action in itself, unless you use the strong upper leg more than the feet, which this focus tends to create. Up as you're flexing, forward as you drive the inside hip forward and into the snow as you're tipping.
So, yeah I mean, it has some good thoughts and we don't have to agree on what cues work better for a given skier etc, but it could have been more complete the first time around, as I understand that main topic is "shorten the inside leg". I don't know if that shows some gaps in the kids mental model of the relationships, she must be using all these other elements when coaching, but he's just a freshman u14.