You can also try some lean ground turkey (rinse any grease off) and plain canned pumpkin. NOT pie filling, just plain canned pumpkin. Or boiled chicken breast and pumpkin. Pumpkin is easier to digest than rice. Once her stool has firmed up you can start to introduce her again to the food.
As always, if it doesn’t clear up you will need to take her to the vet again. Small dogs have a higher risk of dehydration from loose stools. It probably would be a good idea to check with the foster home to see what she was eating there or if they have any suggestions.
