I have a 5 month old female kitten I got who was dropped off as a stray at my vet’s office. She was six weeks when I got her and weighed just under 1.5 lbs. I just weighed her and she is 8.2lbs. She is very lean with no excess fat and is already as long as and almost as tall as my large 13lb male Siamese. Photos below are her at about 4 months. She also has these markings on the back of her ears that I haven’t seen before on other cats Any clue what she could be?