Its actually fairly common for a cat to use one box for pee, and another for poo. Allen is notorious for that. Which is bad for us because he also hates to use a box that's been used... hard with three other cats in the house.

As for going a while with eating very little, does she usually do that when its hot out? I know my guys all cut back n the amount of food eaten in warm weather than they do in the cold weather.