She may have had another hay poke? My Orca's has had multiple ones in a week before
Can you see any foreign bodies in the eye, under the eyelid?
If you could phone the vets & find out if you can email photos of her eye to them? Or get advice & drops/painkillers for her, a sudden onset of a cloudy eye often signifies an eye injury
If you're struggling to get a vet (general one will do) as everyones locked down at the moment & bank hols in the UK ring the vet first thing tomorrow morning to seek advice.
Have you tried to bathe her eye with a pinch of salt dissolved in approximately an egg cup of boiled & then cooled water?
You don't need to wipe her eyes, just make a strip of clean paper kitchen towel into a wick by twisting it & drop 2-3 drops in her eye.
This would help keep the eye clear of debris & hydrated, but it's only for temporary relief & not a permanent fix.
If it's been a gradual clouding over it could be cateracts forming, in which case theres not normally anything done, but Guineas get by ok normally with little or no sight.
But ring the vets at your earliest, the longer eyes are left the more likely they will develop complications
Healing vibes being sent your gorgeous girls way for a full & speedy recovery

xx