Black Butler Dogs: Mysterious Flatmate

Inspired By: Black butler dogs x reader! by Popcornaddict502

When the Black Butler Crew find themselves turned into dogs in a different time-period, they are discovered by a young woman called Sarah.
Sarah has a crush on her roommate, Dorian, and decided to bring the dogs she found home to try and gain her attention and affection (but mostly the latter).
How will the characters react to her flatmate's suspicious and odd behaviour, especially when it comes to her rule that no one was to enter the basement /bedroom under any circumstances? How will they return to their orginal forms? And what exactly are the loud noises coming down from the basement? (that sounded unintentionally dirty lmao)