You were travelling on a ship called Campania with ciel as an extra hand for the investigation, you where in your room going through your stuff when suddenly you heard a scream and you saw that the ship was full of zombies and Ciel, Sebastian, Grell and Ronald fighting against the zombies and Undertaker

Ciel: Sebastian!

Ciel shouted at his butler cause he was loosing a fight with a zombie

Sebastian: Yes, my Lord...HEY you can help us

Sebastian replied to you for the "hey you can help us" and went to help Ciel little did they know you were the wife of undertaker

Undertaker: I don't think they will help yall~... Is that right darling~

Sebastian, grell, Ciel, Ronald: DARLING!!?