My poor BLRW hen has severe frost bite on her feet. She is the only one who has this happening out of my 8 hens, the only thing I can think of is her feet got wet and froze. I have a lot of ventilation and clean the coop every morning. The temps are usually anywhere from -30F below zero, but the norm has been -15F below zero at night. Day temps are around 0-10 above. Her toes look awful. I know they are going to fall off, and I worry about her ability to roost and balance when they do fall off. I would hate to make her suffer all winter long only to find she can't function normally. She walks very reluctantly, but usually I have to bring her down off the roost and into the run to eat and drink, although she does make her way back up into the coop without an issue. It does appear she is loosing weight as well. Is there anything I can do to help this hen, or should I just cull her?