So sorry that you have to say goodbye to her. Do you think the curled toes and legs could have been frostbite, not Mareks? Can you save the body and keep it cold, not frozen, to send her for a necropsy and testing? Here is a lab to contact if you want to get a necropsy:
https://www.uoguelph.ca/ahl/services/autopsyMareks is spread via dander and feathers which can be everywhere in the environment. Virkon S is a tablet that when mixed into water, can be used to disinfect a coop and equipment where a contagious disease has been. It is available on Amazon in small quantities. Bleach 10% in water may be used in cleaning.
https://www.uoguelph.ca/ahl/services/autopsyMareks is spread via dander and feathers which can be everywhere in the environment. Virkon S is a tablet that when mixed into water, can be used to disinfect a coop and equipment where a contagious disease has been. It is available on Amazon in small quantities. Bleach 10% in water may be used in cleaning.