The fun part about her going broody, is all you have to do now is watch! As long as she is able to completely cover all her eggs, they're doing great. Extra bedding is sometimes nice for them so they can create the "perfect" nest. However you don't want to alter her nest as she may abandon them. Provide extra bedding near by and she'll add it in if she wants to. You don't need to, that's only if you want! They don't like to be moved or have their eggs moved as they are grumpy moms now! Some people like to move them to a brooder box so other flock members can't pick on them, if this is an issue. Mark her eggs so if new ones appear, you will know they're from someone else and to remove them from the nest. Good luck!