So my Rhode island red "lucky red" has been limping for weeks. She's laying but hasn't left the coop and isn't "broody" when she leaves the coop she has to hop on one foot. I've tried setting her in warm water checked her foot visually but she won't let me touch it. How long should it take for a sprain to heal? She's eating and drinking and laying normally but I hate seeing her lame and unable to roost with the other ladies. Any ideas?