There is not much difference between the men's and women's model. The women's is a little softer (no quantitative numbers available) and has an additional mounting line approx 1.5 cm forward of the male's. If the ski in question is the 2001/02 model, then the Device binding has been mounted further forward at the factory.
If your friend is heavier or is upper intermidiate level, then the male version would be the better choice. The Device binding can be set so that the boot sole center line can be anywhere along the track, so don''t be worried about that aspect.