why-animals-do-the-thing:

Welcome to totally normal behavior from habituated raccoons. They really lose all fear of people and will just come take things, and can get really nasty if you try to prevent them from accessing food they want. Remember, the end result of habituation is fearlessness, not affiliative behavior. Fearless animals will mess you up to get to resources. The girl is lucky she just let go when the raccoon took the bag of whatever snack she was feeding it.