I would not worry about food at this time. Let her drink, she's needs to stay hydrated.
The poop photo - was that poop or possibly discharge mixed with poop?
It does look suspect like a bit of albumen (egg whites).
Her stance and your description, to me, says she having a reproductive problem. Whether it's a soft shell egg that she is trying to pass or whether she is laying internally it's hard to know.
Patience. Get some calcium into her - 1/2 Caltrate or 1 TUMS is fine. I usually direct dose them with poultry vitamins as well.
If she is not lethargic, you can give her a soak in a warm epsom salts bath to see if that gets things moving. If she is lethargic, then place her in a steamed up bathroom or in her kennel on a heating pad set on low. Monitor her so she doesn't overheat on the heating pad.
Whatever is going on with her, she is under stress, so go slow and let her rest between any treatments you offer.
It's always a good idea to check crop function, so feel of it first thing in the morning before she has had anything to eat/drink - it should be empty. If it's not then we can help you with that.
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