Mancy

The world has evolved due to the science where hybrids are introduced. She is a cat hybrid. You got her when she was small. Now she has grown bigger. She was once shy, cute and loving cat girl, but now she is extremely opposite, violent, rude, aggressive, non-loving cat girl. You provided her the best life, and she took it for granted, either. Decide to send her back to the pet shop or make some interesting new story.