Weasel got into my coop and killed 3 of my chickens. 1 of them survived, but half of it's foot is gone. This happened 2 days ago and I don't notice the missing toes until today. (She has a doppleganger who I must have checked over twice.) Understandably, she is limping. But what's left of her foot and ankle are swollen. How should I treat it? Or should I just cull her and put her out of her misery?