How exciting! Sounds like you have everything covered, maybe a nice brush?

As for milk, no don't give her straight cows milk. It upsets their stomach. There is special kitten milk you can buy from pet shops and supermarkets which she will love! The best food you can give them is the specialty dry food from the pet shops, it can be pricey but is best in terms of their health and longevity

If she starts scratching the floor pop her in the kitty litter. Keep putting her in there regularly, when she has eaten and when she wakes up. Cats are very clean and she will probably get the hang of it pretty quickly.