I thought this was al due to last night being the first to reach beow zero.
I placed fresh hay all around her and gave placed food and water right next to her. In the afternoon It appeared she hadn't moved, but she was a bit more responsive to me. I wrapped her in a towel and brought her into the basement out of the cold. I gave her a bit of water through a syringe and got her comfy on fresh hay and the towel. Two hours later (after researching) I went to check her vent again and to apply some lubricant in case she was egg bound. While doing this she started to seize and then ultimately died in my arms.
Does anyone have insight as to what this was and what I should do if any of my other hens display similar symptoms.