Guineas aren't like chickens.. they usually won't stay broody if you move the Hen and the clutch (as you just experienced). You will need to destroy the nest she went back to, to stop any Hens from laying any more eggs there and to stop her from trying to brood anything there. Take the eggs, scuff up the nest, put a large rock or log in it etc. She will likely choose a new spot to lay within a few days. If she were my Hen, I would not risk leaving her on a nest outdoors, but that's up to you. IMO, outdoor brooding Hens are just predator bait, with eggs as desert.
If she's been sitting on those eggs you moved and they've already started developing, they are most likely already dead from being cold. (You could cook them for your dogs, or hard boil them crumble them and feed them back to your flock (shell and all) if you don't want them to completely go to waste). If you really want keets out of that White Hen, her and her mate would need to be locked in a secure coop and/or run situation until she lays a new pile of fertile eggs inside and goes broody on them (and refuses to get off of them). If you let her out, she'll just continue to lay eggs outside, starting the vicious circle all over again.
If you try the coop/run idea and it works out, you can then try building an enclosed area around her where she is, safe inside, after she's gone broody. This would mainly be to keep other Hens from laying more eggs in her nest that won't hatch at the same time the rest of her eggs will, plus the keets will be protected from other Guineas when they are first hatched (sometimes other Guineas, and even the father will kill the keets for whatever reason). Personally I'd collect the keets after they have hatched and raise them in a warm brooder, Guineas aren't always very good moms. She will fight you when it comes time to collect the keets, so be ready for her to go Tasmanian Guinea Devil on you
This is just what I'd do if she were my Hen... but best of luck with whatever you choose to do!
