We have a 2 year old female named Noodles. Today as I was about to go to bed my sister in law noticed that the skin around Noodles right eye was a dark pink instead of her usual light pink. She was fine all today until a hour ago and we don't know if we should bring her to the vet or not. My fiancé wants us to keep an eye on it to see if it gets worse. What should I do? I attached pictures of each eye on her to show the difference. The first one is the eye I'm worried about and the second one is of the one that's not affected.