Temperatures in chickens are not very reliable for telling of illness. Normal temps can range from 103-107, but will fall if the chicken is not eating.
I would suspect that she is suffering from internal laying, salpingitis, or egg yolk peritonitis from her behavior. Hopefully she will perk up. If you lose her, I would do a necropsy to look for amber fluid in her belly egg matter in the belly, or the pressence of lash eggs. Note the color of the liver, pressence of excess fat, and look for blockage inside the gizzard and crop.
I would suspect that she is suffering from internal laying, salpingitis, or egg yolk peritonitis from her behavior. Hopefully she will perk up. If you lose her, I would do a necropsy to look for amber fluid in her belly egg matter in the belly, or the pressence of lash eggs. Note the color of the liver, pressence of excess fat, and look for blockage inside the gizzard and crop.