I do not think she will take them yet, although you will likely be able to get her to brood them overnight so long as you remove them early in the morning before they come out where she can see them. That sustained exposure will promote the imprinting process even though it will not go to completion like it can in just a few days.
I would go straight into plan B. I need to describe what amounts to a cook book procedure for doing introductions.
I would go straight into plan B. I need to describe what amounts to a cook book procedure for doing introductions.