I just got my roughly 3 month old Plymouth rock today. However upon close inspection a few hours after receiving her, I notice she will sneeze every so often. She also appears to be making a sound like mucus is somewhere in her. Bad thing is that she's been with my golden comet this whole time and now I'm worried she might have gotten it. The infected one is very very active running around and chirping/clucking a LOT. Bad news is that I am only 15 and cannot afford anti-biotics for her, plus the farm we got her from was very far away and cannot return her. My parents said this is the last chicken they're getting and will not replace her if she dies. So basically if she dies the golden comet will be by its self in the cold winter here in Cleveland. So what can I do to make her better?