I think she'll be fine. I remember growing up when we let a hen brood once, we didn't do anything special for her. The nesting arrangement was 2 or 3 shelves running the length of the coop seperated into cubbies. I don't remember there being any problems and all the eggs hatched! We had the ability to split the coop into two coops simply by closing the door in the middle; we may have seperated her and her clutch (I can't remember for sure) but not until after they hatched.