One of my cat's nipples is very swollen and purple and it hurts her when it is touched. She is laying on the couch and seems very lethargic. I am very worried about her and I want to her to see a vet right away but my mother refuses and says Mary-Jane is not sick and she doesn't need to see a vet. I'm very upset. What should I do? I have no money, no transportation, nothing to get her to the vet.