Help! Chicken is ill :(

[zchickens_]

Hey all! My bird started acting strange today. She first breathed very fast, but as she did so sometimes i just assumed she was hot. I washed her coop and then showered her. For once she wasn't afraid of water and wasn't running, which worried me a lot. I then tested to see whether she would run from a broom, which she usually did. She just made a few noises but didn't run. I then gave her some salad, her favorite meal, but she didn't eat it. She pecked at it twice but then stared blankly off in the distance.
Then she laid down.
I observed her and her comb and wattles are a bright red, her eyes are half closed and her feet are slightly pink-ish.
What is going on? I'm really worried. Can i help her?

 

[zchickens_]

Update: She ran from the broom now, however didn't want to eat salad and ran a bit from water, however not much. Her poop was little, liquidy and white.