I feed Royal Cainn for my pet, if your dog already on a particular dog foods, I strongly suggest don't change it for now.
If she's very young then you better pan an area for her to sleep and potty(with trainning pat) in house. Don't worry, She still able to train later to potty outside when she's getting older. Also, the best things is to train her with a potty command, it helps in your future trainning.