Australorp suddenly lethargic, listing to the side when standing, comb and wattle pale

[Razzlefrazzle]

She is feisty (her normal self)

So she is walking and standing normally again?

Drinking a lot of water is a little concerning, but if she otherwise seems well I would just monitor her for a few days and see if she returns to normal. If she keeps drinking a lot of water I'd check for crop issues (https://www.backyardchickens.com/ar...w-to-know-which-one-youre-dealing-with.73607/) or consider if you might need to deworm.

 

[Wyorp Rock]

I agree, I'd put her back since she's acting like her normal feisty self and see how she does.
Check to make sure her crop is emptying overnight. I wouldn't hurt to give her extra calcium (1 Calcium Citrate tablet) once daily for a week.
Monitor heavily and if she starts to have trouble, pull her back out. Take photos of both pullet and poop.

 

[PenelopeJane]

I put Jemima back out about an hour ago. She walked around and told the others that she retains her spot in the pecking order. Then she went just inside the coop and made herself a nest. I just went out and one of the other girls started up the ramp to see her. She made a high-pitched trill that I have never heard before, and Sophia went right back down that ramp. Then Jemima stood and looked beneath herself (no egg) and settled back down on the nest.

 

[PenelopeJane]

Finally!

 

[Eggcessive]

Congratulations! Glad that she is better.

 

[PenelopeJane]

Many thanks to each of you who helped us get through this difficult time.

 

[Wyorp Rock]

Nice Egg!
I'm glad she's doing better. I'd keep watch on her for several days, but hopefully she's back to normal