At first you had been pretty convinced that Bobbi was Mistress Fire. It made sense, based on what little you knew. Bobbi had been there when you first got the chastity belt in the mail at work. She was the one that had pushed you to reveal that you were wearing that chastity belt to the first group of your co-workers - her, Gisele, and Hayley. And, if you really wanted to believe in conspiracy theories, she had been out sick on the day Mistress Fire demanded that you reveal ALL your secrets to a co-worker of your choosing. Was it possible that she intentionally took that day off just to ensure you'd have to out yourself to someone besides her? Anything was possible. But then again, she was out for that whole week, not just the one day. So maybe you were reading too much into this.