I'm near Montreal, I head towards Granby, Quebec every day (35.5miles). Today was very wet snow and a lot of slush and I found the car to be slipping easily, but that was because I was too hard on the loud pedal AND it was the first day wearing snow boots, I wasn't quite good at first (didn't feel the pedals).
I bought the car last February 25th, so I was in the middle of winter, and I got used to the road conditions easily (my previous car was a 2000 Civic 4 door). The car (with the tires I have, Yokohama A720) is excellent on ice, not enough grip in the snow at low speed (you have to be careful 'cause the gas pedal is VERY sensitive) but excellent at speeds over 30mph.
My opinion is that it will take her some getting used to the steering, the gas pedal and the clutch. Is she used to ABS? Once she's achieved mastering the P5 I have no worry at all 'cause the P5 is a very safe car. Get GOOD winter tires, my only advice.