The fore/aft balance is a problem, but so is the lateral ski to ski balance and lack of upper/lower body separation. She also needs to have much more outside ski dominance - she leans uphill onto the uphill ski..... Where to begin? It's not possible to do anything right without balance. So that is it.
Balancing is about moving. She is very static, so get her moving is the first order of the day.
I'd first make sure that she has much more movement in the vertical plane with flexion and extension drills. The fore/aft balance must correct itself when the flexion/extension drills are done right -- it's a side effect, but one that you can point out when she does it right.
You may even want to do this in a wedge since she turns with a LOT of unneeded rotation.
After that, I'd lose the poles, and do a drill like putting both hands on the knee of the outside ski to cement the notion of outside ski dominance.
Finally, do things like reverse airplanes -- inside arm high (angulation), as opposed to outside arm.
Eventually, we'd get to the idea of rolling the inside ski to change edges, but to be successful, we need to build a a stable/dominant outside/stance ski.
Sorry, the "we" referred to my teaching organization, not you and me. While some in the CSIA may choose to do 1000 steps at this point, that is not usual.
I don't see what is "contrived" about drills that provide strong internal and external feedback. 1000 steps is no less contrived than these drills.
Fore and aft balance remains a big problem here. The external cue of the ski lifting at the tip first shows her balance point is on or behind her heels.
She is now even more rigid. Given that lifting the inside ski has resulted in even LESS overall movement, I rest my case regarding the usefulness of the 1000 steps. She's obviously not close to ready to do 1000 steps. IMO, I don't think she is ready to do this one either.
The issue remains that balance requires movement. Her response to the instruction of lifting the ski is to become completely rigid, except for the moving leg. Telling her "Your doing great!" here is a disservice. She's as stiff as a board. While I admire her effort, I cannot tell her that this drill was a success.
So, again, I come back to the tired old notion that movement is a requirement to maintain balance. Consequently, I'd work on drills with which she can be successful. These are the most basic vertical movement drills. As we used to say ski as "Tall as a house and small as a mouse." Full extension, arms straight overhead, and then crouched as low as you can go without riding the tails of the skis.
Really anything you can think of will work eg. touch "Head& shoulders, hips, knees,toes" Then back up again, from toes to knees to hips to shoulders to head" as you go through the turn, making sure that you put the fully flexed and extended positions at the right places in the turn.
Then do hopping exercises, focusing on making sure that the ski comes up either flat or tail first.....
At this point, you should have her moving really well, and she should be able to have some fore and aft control of her balance point.
Getting this far would be a MAJOR success story and she'd see rather large improvements in skiing. She walk away knowing that balancing requires movements that she is capable of making.
This is one beauty of the 1000 steps exercise. Because almost everyone already knows how to step without skis, asking students to step with skis on can (emphasis on can) automatically cause desired changes in stance and movements to occur. It does not happen for everyone and many struggle at first. But enough students improve quickly with practice that many pros will choose to use this drill and be successful with it. Even when students suck doing this drill, it often makes an immediate and noticeable improvement in fore/aft balance. Another beauty of 1000 steps is variety of options/progressions pros can use to create the optimum tradeoff between difficulty and doability to optimize the student's rate of improvement.
I say that the odds of her doing 1000 steps "good enough" are 100%. The "stomp drill" in the second video is close enough to 1000 steps and the improvement in balance and stance from the beginning to the end of the clip is readily noticeable (freeze at 59 seconds and look at the stance, then compare the hand movements at that point to the first clip and the beginning of the second). She may suck doing this drill but she is already off of her heels and standing against the outside ski more.
The next good thing about 1000 steps is that the basic error in this drill is easily fixable. Most students can easily be taught the difference between stepping the ski with the tail lifted more than the tip versus vice versa. If this student was given that as the focus in the next run, the groundwork for a breakthrough lesson would be complete.
Telling her "Your doing great!" here is a disservice.
(nerd) I would appreciate it if we keep comments to "what would you do with this skier" rather than a critique of my teaching, thank you.
So, again, I come back to the tired old notion that movement is a requirement to maintain balance.
(nerd) I couldn't agree more. Overall effective skiing requires dynamic balance. But what good is the fine tuning of balance and movement if there is no speed control? In order to ski longer runs with more opportunity to improve (versus being on a platter lift/magic carpet/sidestepping) I find I have to turn a blind eye to some ineffective movements in order to create a positive change in others.
It almost becomes a chicken versus the egg question.
-nerd (I'm having trouble trying to figure out how to write outside this box)