Yep. I agree. Hopefully I at least put a seed of doubt into her mind...My coop is open all day in temps around zero and my birds are fine....I feel for them but they are okay. I'm sure they can't wait for the temps to go back up. But my point is since not lost one bird yet in 4 years during the winter no matter how cold.
When the temps stay below ZERO I just keep them inside the coop that day. With PLENTY ventilation.
Even my Ayams are fine. But I feel without ventilation her birds will get sick....