Hi there, My chicken Miracle has a blackish-purple streak on her comb. From what I've seen, It's frostbite. I will confess, my ventilation isn't as good as it should be. But is there anything I should do for her comb? I put some bag balm on it, and I really don't want her to lose her comb, if that's possible. Any advice is appreciated Thanks. ETA- I forgot to mention; it covers 80% of her comb.