Other foods that help soften stool include: broccoli, greens, cabbage, celery and lettuce. (foodpyramid.com)
A little bit of milk may provide fluids and soften her stools since many cats are lactose intolerant, however, give too much and you may risk the opposite problem. (pethelpful.com)
You can read here about foods that will help soften stools in babies and toddlers. (easybabylife.com)