Hairless rats always get poryphrin staining on their eyes. Every hairless I have had always gets it, and so does all the others I have seen. It just goes along with being hairless, as they are much more sensitive to things in the air, and often times have allergies. Or she could be sick, but if she were sick you would see it on her nose as well. You can get some Natural Tears and coat the eyes if you wish.