Reminders to get forward
My advice (from the front, as it were, of my own continuing struggle to get consistently forward, rather than from someone who has successfully won the struggle) is that she should approach it more positively (get forward, rather than don't get left in the back seat.)
In that connection, I've pasted at the end of this post various mantras that I've seen that looked helpful. IMHO, the key is to find one that works--different forms of words work for different people. What seems to work best for me is the Deb Armstrong advice of thinking elbows forward. Also, be warned, most of this advice is aimed at (and processed by) a racer, with more than average need to commit forward compared to a recreational skier.
Also, be aware of the special problem of the breakover from flat to steep: Three things naturally occur--(1) the feet take off, suddenly going faster; (2) the upper body gets left behind, because the slope itself changes the orientation of the skier (i.e. if you are perpendicular to the flat, when it changes to a 40 degree angle down, you're suddenly tipped 40 degrees backward); (3) fear appears and that irrational reptile brain kicks in with precisely the wrong advice, wanting you to lean back, away from perceived downhill danger.) The combination of those factors is an almost guarantied immediate trip to the back seat if you don't make a big forward move at the breakover. I find (as I'm working hard on this) it helps to try to practice EVERY breakover (I'm trying to make this a muscle memory/habit so that it will work in the race course when I'm thinking of something else) while free skiing, and at that one spot to pull my feet back.
You might also check to see that there's sufficient forward flex in her boots.
Before the mantras, here are two drills you might try:
(1) javelin turns, on one (outside) ski, with the other ski held in the air with the toe down and heel up. (To get the toe down, you have to be forward. And if you can get forward on one ski, it's even easier on two.)
(2) Seppuku turns (if you can do this safely without impaling yourself): Hold both ski poles in the middle with both hands (work up to this.) Put both hands near your hip on the outside ski side of your body in a turn (that is, exaggerated counter.) Then, at the end of the turn, as you launch into the transition for the opposite turn, thust both hands dynamically forward and diagonally across your body and drive your whole body in the direction of the tip and outside edge of your old inside ski. Once you've cleared your body with the tips of your poles, bring them to the other side near your hip (exaggerated counter.) Repeat. Why I like this drill is (A) it's nice for teaching effective, exaggerated counter; (B) the explosion into the transition seems to be nice practice for a dynamic transition; and (C) it is flatly not possible to do the drill without getting those shoulders forward in the athletic position--otherwise, you won't clear your torso with the ski pole tips.
(3) Check out Rick's first day progressions for getting back on snow. There's a lot there about working on fore and aft balance.http://www.modernskiracing.com/seasonstart.php
Anyway, the pastebomb of get forward mantras, mostly with sources attached:
If I'm trying to bend the front of the ski, I work on moving the body into the turn early, flexing the ankles, and generally making things happen at the top of the turn. --Alaska Mike, NASTAR forum.
“Try to feel equal pressure on your shins as you push into your turn. One way to do this is to find a letter on the tip of your ski and push it into the snow. Pretty soon, you’re standing on your toes without thinking about it.” --Picabo Street, USA Today, February 18, 2003.
It’s easier for your skis to catch up with your body than it is for your body to catch up with your skis. [EpicSki, somewhere, but I never copied down the source]
Move more than you think you should, more than you think is necessary, and more than you think is safe. At the start of the turn, move your shins against the front of the boots. This pressue will transfer to the front of the ski. Your goal is to make the edges bite into the snow by putting pressure on the shovel of the ski at the moment of edge change. --Weems' Web site, as quoted on EpicSki.
Early forward pressure: This is accomplished via ankle flex for some, waist for others. --Ron LeMaster's 11/06 Boulder talk, as quoted on EpicSki by SSH.
You want to move your center of mass FORWARD and into the turn for proper edge engagement. I focus on flexing my new inside ankle (left ankle in left turn) toward the turn at the beginning to start my COM moving forward as well as inside. If I flex my knee, I tend to move more laterally, and then I'm behind the skis. --Kneale Brownson, EpicSki.
Also know that the more pivot you execute, the more opportunity it offers you to auto move your fore/aft balance point from tails to the tips. --Rick, EpicSki, specifically on slalom technique in the gates.
No matter how much of the tail you use at the end of the turn, get back to the tips for the initiation of your new turn. --Rick, EpicSki, same.
Instead of thinking "hands up and hands forward" think "get your elbows forward". It pulls your center of mass naturally forward into the athletic stance. --Deb Armstrong.
Another way to think about keeping the weight forward is (especially in slalom) focusing on pulling the feet back to keep them under you so that your position is forward at the initiation of the control phase of the turn. --Olle Larsson.
"You're not bent over at the waist, it's more like there's a curve through your back and down through your glutes just like you would sit on a road bike. It's got to be obvious that forward can't be just shin pressure..it's got to be the hands and chest as well." --Richard Malmros (SkiRacer55) "Sharpening the Saw"
If she has trouble bending her ankles and knees (just drops her behind back to get her shoulders forward) or skis too stiffly, she might try the advice I got from a Masters' racer in a clinic: "Relax forward, letting the boot cuffs hold you up, in a natural athletic stance".
Good luck, and I'm interested in others' solutions.