Hi Dean
Great to hear that you are enjoying your workouts so far and your daughter sounds like quite a skater. The double axel and triple Sowchow are no mean feats. As a canadian it was pretty much mandatory to spend lots of time on skates but my endeavors were limited to the comparative violence of hockey as opposed to the grace of figure skating. It sounds to me that your daughter is having a hard time declerating the rotation of the jump once she hits the ice. This rotation has to be controlled throught the entire body but two good places to start are the hip and trunk.
From the suspended lunge try to rotate both into and away from the lead leg holding the arms extended and at chest height. This will allow her to create rotational momentum. Once she can do this well you can begin to add power to the lunge so that she is airborne and then lands into the rotational reach to help further duplicate the forces of the movement. Finally you can add a medicine ball throw to this to create more rotational force for her to contol. Stand to the side of the direction she is facing and time the ball so that she is catching it from the side as her foot touches the ground.
Any of the suspended core exercises will also help and especially integrating the suspended scorpion where she suspends only a single leg, positions herself slightly in front of the neutral position and takes the free leg over the supsended leg as far as possible and then under the suspended leg as far as possible.
These exercises should really make a difference.