I rented the K2 Phat Luv this year and just loved them. I rented them to go heli-skiing in powder but unfotunately the weather put a stop to that, but used them in deep spring snow conditions and they were awesome.
Another ski I demo'ed this year and enjoyed was the Rossignol Attraxion, a very light ski was easy to throw around, and wide up front. Handled crud and groomed slopes really well, no powder to try it out in. I tried them after I skied with a woman who has them and she raved about them - she always skis off piste where possible. Not as wide underfoot (74?), might be more suited to NZ conditions than Canada.
I currently ski on head monsters IM70, but are only 70 underfoot, I want something wider underfoot. I have demo'ed the iM77 and this years Every Thang, last years Wild Thang. I enjoyed all of them and would be happy to pay money for any of them. I did not try demo sweet fat thang cause it was not powder day, but it would be more suited to your conditions and you want something wide underfoot if she is venturing into the powder. If you get wider underfoot then it means she can go shorter, and you can throw them around quicker, something that really helped me when I first ventured into the trees.
I would not buy skis without demo'ing them. Another lady friend demo'ed some skis I liked and she did not like them, and we skiied similar terrain.
In NZ we have lots of free demo days where the shops line up the skis at the bottom of the lift and you can take them for free for an hour. Last time I demo'ed in the US it cost money :-( Make sure you demo them in conditions that are typical of what she is going to ski