I would put the peeping eggs under the broody hen. There are several threads on here that involve candling eggs, guinea eggs are relatively easy to candle if you know what you are looking for. If several are near the hatching point then I would give them to your broody as well. Once the keets hatch you can remove them and give them back to her at night once all the eggs have hatched as long as they are within a few days of each other.
I am so sorry for your loss. Sometimes these things happen and we have no control. Hopefully there is a silver lining and you get a few babies out of it.
I am so sorry for your loss. Sometimes these things happen and we have no control. Hopefully there is a silver lining and you get a few babies out of it.