Yes Mistress

Anna is 15 about to turn 16. Let's just say she hasn't lived the , easiest life. A year ago her whole family was murdered right in front of her. A family that she was very close to, that she grew up with and made memories with, memories that haunt her now.
Since that time she has acquired two things. A job doing the dirty work for some of the most powerful people in the Under World of London, taking care of anyone standing in the way, such as the queens guard dog. And then secondly she has acquired a butler.
A butler that protects her at all cost. How else would a young girl such as herself make it in the Under World of London's filthy streets crawling with hungry men and filthy rats.
Anna suddenly comes upon a new mission. To take the queens guard dog out, but instead of that, she finds herself attached to the boy. Why?