The Cat in the Box!

You are an average person who lives in a rented apartment. One day, You found a box outside your apartment's door. It was a normal box until you heard the sound of a meow! You opened the box and found a small white kitten. Taking pity on the defenceless kitten, you take her inside. It was all normal but suddenly the cat turns into a human like form. Now how will you live your life with this cat-human? Note - It's not necessarily a scenario for just males or young people. You can also treat her as a pet or just like a sister.