Your list is o.k.I'll post some pictures of her vent tomorrow when I wake up it looks better just staying moist it just looked bruised/dark purple but I did feel quite a few tinier scabs and such as well when bathing her so could jsut be that. How long can the prolapse stay out online it said it's super dangerous and should be treated ASAP but some people are staying it can take up to a week to heal?
You need the Calcium Citrate+D3, some type of oil or anti-inflammatory cream.
Spray bottle is good, you can use a bit of warm water to spray the vent to keep her cleaner since she's stressed with soaking.
You have a lot on the list - those are fine, but you really just need to get that Calcium into her, keep the tissue coated with oil or ointment.
Keep her hydrated/drinking. Plain water or a bit of electrolytes is fine. Normal feed to eat.
Oyster shell, regular feed, grit - these are basics that you should already have on hand and should be providing to your flock daily anyway.