Hi, would you please help me find a book? It's about gangs in london I believe. I remember pieces of it. How she has to work for him, and one day she sees him kissing another girl so she runs away but he founds her and "kills" her friend (he doent actually). She then wakes up tied up to a chair in the basement. His second in command slaps her, and when the boss gets in, he punches her. I also remember her being kidnapped by another gang, and she miscarries because of the abuse, and so he blames her for it. She also takes drugs, tries to suicide in the bathroom by holding herself under the water.
