Nice first turns.
Your friend is turning pretty evenly right and left. Her skis are moving together, mostly. There's a lot to learn, but she looks like she's doing a great job of making her first turns.
I'd take the poles away and work on hands/arms without them. The pole plant is not necessary with novice turns of this sort, and they confuse the body. The key is to keep the elbows in front of the jacket side-seams. Those poles can go back in the hands when she figures out she can move her arms independently of her legs, when she's truly ready to make pole plants without gumming up the rest of her body's movements.
Second, she needs to know she can move from one foot to another without falling over. Have her add onto her nice turns some shuffling (sliding both feet back and forth, one forward & the other back). Then have her try adding some stepping to those same turns (march!). The point is to loosen her up so she feels confident with doing one thing with her left foot while doing something else with her right, while sliding and turning. You can have lots of fun doing these antics; you can also have her clap in front of her body and clap behind her body as she turns, same goal. All this helps with refining her balance so that she's more able to move into and out of counter, and flex one leg while straightening the other (hold off on these things until later - getting balanced while in motion comes first). Can you get her to flap her wings while she skis? Pat her head and rub her tummy? (Well, not really, but can you do it while she's working on these other things? She can think up some absurd balance challenges for you to try while she's struggling with your ideas for her.)
Stance is of course always an issue. She does need to become aware of where her balance is, and she's definitely back. This is normal. Not only most beginners but most intermediates are aft, so it takes some real work to get out of the back seat. Get her to bounce into her boot cuffs, shin-tongue wise while standing static. Then bounce into the fronts of the cuffs while sliding and turning (another balance antic). Then move to maintaining that shin-tongue contact while not bouncing. The general idea is for her shins to come up out of her boots not at 90 degrees but tilted forward, not only while bouncing but all the time. On the chair you and she can identify skiers who are doing this and those who are not. Focus on the tilt of the shin. Maintaining this angle takes some getting used to as you know.
The next thing related to not being aft is for her to feel where her hips are; way back behind the bindings, slightly behind the bindings, over the heel piece, or over her arches, or over her toe pieces, or even in front of them. Encourage her to try all those while sliding and turning, so she knows she can ski waaay fore and waaay aft without falling over. When she can keep her balance while moving way forward to way aft, have her try to match her spine angle to her shin angle (both tilted forward). She'll need you to confirm that spine-tilt angle, as it's very hard to feel. She can confirm your shin/spine angles too.
Work on moving the hips up and down while keeping the shin and spine tilted the same as each other. Moving the hips up while not changing the shin/spine tilt angles is hard to do and needs training. You've got it when you head goes forward and up as you raise your hips; it's not working if you head goes straight up and your spine tilt disappears so that it's 90 degrees to the skis. Doing this right will allow her to feel the tilt of her thighs as it changes. That tilt angle gets more upright as the hips go up, and more horizontal as the hips go down. One of those movements moves the skier more aft; the other moves the skier more forward. When she can do this without straightening up the spine's tilt, she can feel her balance moving fore and aft. That fore/aft will be hers to manipulate as she sees fit. Success! Don't expect this to happen in a week, by the way.
Edited by LiquidFeet - 2/3/14 at 6:53pm
Best of luck and have fun!