BigE,
I can see that you have been working hard on improving racerE's skiing. There is some good stuff going on here. Let's take a closer look to see what's working and what can be improved.
Tipping - these three frames show the inside foot LTE tipping movement.
Flexing - these 2 frames show that the skier is working on flex to release.
This is a good start. Now work on bending/flexing the legs more (and the back less) so we see close to 90 degrees at the knee. Like this pic of Shiffrin.
Upper body - these 3 frames show a fairly stable upper body (CB, CA, and hands).
The good news is that alot of the PMTS work is showing up in racerE's skiing!
So, what's the next step?
The video often shows a wider two footed stance that is common among junior racers. This stance results in too much weight/balance on the inside ski. At this point, the single most important movement (really more of a skill than a movement) is working on establishing balance on the outside ski (from the beginning through the end of the arc). This will require narrowing the stance, lightening (via outside leg flexion) the inside foot, and pulling/holding back the free foot.
Best drill - Super phantom with touch-tilt:
As in a regular super phantom, transfer balance to LTE of the uphill ski. Then, touch the inside edge of the lifted, dowhnill ski to the inside ankle rivet of the stance boot ("arch touches ankle"). Keep it touching while tipping the free foot further toward its LTE. Don't let that free foot touch the snow until the very end of the turn. VERY IMPORTANT STEP! At the end of the turn, when the free foot touches the snow on its LTE, immediately pick up the new free foot, and touch-tilt the new stance boot.
When learning, racerE can begin with keeping the tip of the free ski on the snow, but the goal is to keep the whole ski lifted throughout the turn which is a true test of the skier's ability to balance on the outside ski.
BigE, reread the Free Foot Management section of Book 2 to be sure you know what to look for when working with racerE on this. Start with the Pole Press drill (pages 68 - 69 of book 2) so racerE has a good understanding of the muscular effort needed to hold the free foot against the stance boot.