Unisex models
Don't feel limited by your gender in finding the perfect fit. As women's versions generally run narrower, consider a unisex model.
Contour
Some climbing shoes have a more tapered contour. Helpful for technical climbing, this allows you to toe into small pockets and seams. Because this feature eliminates toe space, it can cause disproportionate pressure on the outside toes of a wide foot. For this reason, you might prefer shoes made to be all-around more comfortable--those advertised for light climbing or for long days. Some tapered models, however, can be comfortable for the wide-footed, for example the Scarpa's Techno Lady, and some of the more casual shoes run narrower. So remember, as everyone's feet are shaped differently (wide feet or not), your success with particular brands will vary.
Identifying a good fit
Everyone has their own idea of how comfortable or uncomfortable a climbing shoe should be. When trying on shoes, be aware of pain on the sides and top of your feet. If the shoes have extra space anywhere, or if the shoe puts disproportionate pressure on one part of your foot, consider another design. If the shoe is unlined, the discomfort will lessen as the material stretches.
Lining
To increase the foot's sensitivity and flexibility on the rock, some shoes do not have interior lining. This can be good for the wide foot because the material and thinness of the shoe increases its ability to stretch--thus accommodating your foot's shape. Be sure to anticipate a half-size or so of stretch as you break these in.
