I have just looked at some photos of Ragdolls in someones siggie and they look like a shaggy siamese. Are they a new breed or have they been given a more popular name? Not sure about Ragdolls but Siamese have been around a lot longer than most of our boards members age combined, and they are equally as popular as each other as they have totally different characters and personality's next to the basics of just being a cat
Some people find as we have with our cats at least that Science hill and Nature's plan biccies is not as substantial for our cats and doesn't seem to fill them up and makes their poos really smelly, maybe try James Well Beloved or other brand biccies and i'm sure she will be satisfied and in the meantime try a little wet food as a sort of top up meal and treat the biccies as a snack-like Chicken, fish mixed in with 1/4 of kitten pouch or lovely as it sounds it's brill but Sardines with sauce or brine washed off mixed with a low salt rice pudding,a few ideas that work for our lot and may work for your little girl too