Is she losing weight? If she isn't, I wouldn't worry about it too much. This is the time of year that they naturally slow down on eating. I have a female that only eats a very few worms each week, probably no more than 5 a week, and she doesn't lose any weight.
If you are real worried then you should take her to a vet for a check up and a fecal exam. It really doesn't cost that much, my vet charges $32 for a full exam.
If you are real worried then you should take her to a vet for a check up and a fecal exam. It really doesn't cost that much, my vet charges $32 for a full exam.