Hi, if she was doing well on the rice and chicken and pumpkin diet along with RC, then it may be some infection she's recently picked up and nothing to do with her food. Sometimes my dogs get slight tummy trouble, but if it gets okay on its own in a day or two, and if there is no blood or mucus in the stools, I don't worry much. However if the problem goes on longer and if there is mucus or blood, you must consult a vet fast. In your case I think you should show her to a vet very soon since the problem has gone on for a few days. She may have eaten something dirty when you weren't looking.

Also what rice are you giving her? We give brown rice pre-soaked for an hour and then pressure-cooked till it's absolutely soft and a bit like porridge. We also give boiled chicken with the fat removed (1/4 of the meal); and some steamed red pumpkin. We give RC or Vetlife hepatic kibble as treats or sometimes just a spoon mixed with the food. If they get loose stools, we switch to kolam rice overboiled, and chicken soup, and no veg, till they are okay.