I agree, in the first photo it does look like the upper eye lid (tissue), but the second one, that looks like pus. If you press on that will any come out? Chicken pus is a semi-hard cheese like substance, you may have to push and pry a bit to get it to come out.Let me take another photo, but it doesn't look like puss....it looks like the tissue around her eye.
You can make saline at home. The recipe is 1 teaspoon of salt per quart of water. Boil 15 minutes makes it sterile. You can store it up to 24hrs in a sterilized jar, then throw out and make new.