A lot of personal preference as well as riding style is going to go into her decision. I have a large pair of mirrors low mounted outside the cage on each side. I like them, however when riding in close brush and limbs, they fold back when they get hit. It's not a major problem to readjust, but something to keep in mind. Other members will have to chime in on what they have and like or dislike. Keep in mind, there are a lot of mirrors made for different applications that are less expensive than mirrors made for the Ace. For instance, take a look at mirrors made for golf carts. Might find one she likes there. Hope this will get you started.