She should not be falling nor should she be fluffing up other than momentarily to rearrange her feathers. If she spends much time on the bottom of the cage and being still while there and fluffed up then I would worry that she is sick. as these are all warning signs of illness. Keep her warm as you had to with the first one. Is this one eating and drinking? Is this one being active?
You are fine with your seed mix, the variety of foods are veggies like leaf lettuce, not head lettuce, peas, corn, carrots, squash, pumpkin, sweet potatoes, and such items.





