Nah she's using it the right way, crutches and canes are used on the side opposite to the injury to be able to divert more weight to that side and leighten the inujured one and giving you more balance. Imagine a tripod, it moves the center leg then the legs on the sides at the same tima, not the left first then middle and right ones at the same time, it's balance would be way off otherwise making it easier to fall.