I've had two broodies. If I had that area, I'd leave her. just watch and listen for peeps. I wouldn't move her unless it was necessary. Most likely all the eggs aren't hers. I had one who had 6, 4 were standards and she was a bantam. She hatched all but one. I have a Dominique who is brooding and I left her where she is. I'm tired these days and when and if they hatch, I''ll move her then. She's not a real friendly girl anyhow. She only has two eggs one of which I know is not hers. Are they fertile? Who cares. Whens the last time you heard of a hen dieing on a nest of eggs. Estimate how long you think she's been sitting and go from there. If she hasn't hatched them in 15-16 days I'd check on them. My hen hatched in sucession. When the last egg didnt hatch for about 5 days I tossed it. She had lost interest anyhow.
Oh and great pics, I love em.