We lost an Araucana a few evenings ago. She wasn't even a year old yet. Seems to us she was egg bound but she was moving around the night before and didn't show signs of distress. Our Australorp is recovering from bumblefoot surgery and she looks pale and sleepy. I hope that she makes it. She is in her cage so our rooster and other girls dont bother her. Raising chickens can be a mystery.
So sorry for your loss. I am also dealing with the recent loss of a chick so I know how you feel. Hoping the rest of your flock is fairing well in this snow and still bringing a smile to your face.