OT - cat needs home in Milwaukee area

I am posting this for my Aunt who has inherited my Uncle's cat, Calipso. My uncle was diagnosed with esophageal cancer in May. He died last month, a lot quicker than he had anticipated. His cats were very important to him and I am sure he would have provided for something given time.
My Aunt has taken over care for the cat because she knows how important she was to my Uncle. She is however, very allergic to her. She has tried all the no kill shelters, she has posted signs and check with the vet.
Calipso is 12 years old. She is used to being in doors. She is very shy until you get to know her.
Please private message me if you know anyone that can provide a home for her.

Thanks,
Cindy