Siamese kittens & cats in Maine

Mary is a purebred snowshoe Siamese cat, she is 9 years old. My Dad got her when I was a teenager and when he moved out, he left her with me. She loves to lay in the sun, cuddle and eat! She is very friendly is always interested in lounging with her owner. She is litter box trained, neutered and an indoor cat. Although she does love to play in the grass in the warm weather! She is very very quiet, does not bite and rarely ever scratches. She does not liked to be picked up but when she is, she is not aggressive. She is easy going around babies and hesitant around small children. Mary is one of 3 cats in our household and gets along with one of our cats very well. (They play together and cuddle) She has territorial tendencies with our other cat and it's causing issues for both of them. She would be much happier in a house where she is the only pet, or even with a kitten. This is a very hard decision but her happiness and comfort is my priority. Thank you for reading!