Another thing , I use oaten chaff in the brooder instead of wood chip or sawdust. If you lined the bottom of her pen with it , say 3-4 inches deep it may help with pressure and the poop . I don't know where you are , but a 25 k bag of chaff is about $25 here and it's easy on your garden. Unlike sawdust. Plus I found that the chooks would eat the shavings.