Update: She died. After taking the fluids, she seemed much weaker, then her neck seemed to ‘spasm’ (jerking around violently), and then it flopped to the side. Maybe I gave her the fluids the wrong way? :(
Some quick backstory here, I let our chickens out around 10:00 A.M., I noticed that our hen was still not out, and was sitting down inside of her nest box. Her comb was pale and she was shaking, and trying to push the egg out. I gave her an epsom salt bath, then allowed her to go into my garage...