Help Find Our 3-Legged Tortoiseshell Cat!

She is a female shorthair cat with a tortoise shell fur patern (black, orange, and hints of white) she is on the smaller side and friendly but does run away from people sometimes. Her most distinguishable trait is her legs she only has three because she is an amputee and is missing one of her back legs. She is mostly an indoor cat but is allowed outside from time to time and when she didn't return it was way out of the ordinary and she still hasnt came back.