Is she pooping at all?
She may also have a blockage in the gizzard. Hopefully she will improve over the course of several days.
If it's not even been 20 hours, then it's not been a full day yet, let alone 2:)
Surgery would be the absolute last resort.
Never withhold water during waking hours.
Here's info on treating the crop.
https://www.backyardchickens.com/articles/how-to-treat-sour-crop-and-impacted-crop-and-how-to-know-which-one-youre-dealing-with.73607/
What's her poop like?
Taking a sample of poop to see if worms may be a problem is a good idea. Her skin looks to be in good condition, but I would still look her over for lice/mites. See that her crop is emptying overnight.
She may be starting to have some reproductive difficulties. You...