Mystery Mistress 5
Then there was the issue of privacy. You were going to tell one person, so that was unavoidable. But once armed with your secrets, would that person go and tell others? You couldn't pick anyone too chatty, or you might as well just hold a meeting and announce it to the world. You had to find someone that would keep a secret. But Mistress Fire specifically said you couldn't ask them to keep quiet. So it would have to just be in their nature.
And finally, you had to consider "pre-existing conditions". That is, what did people ALREADY know. Thanks to Bobbi's unintentional detective work on Friday, she was one of three people that already knew you were locked in a chastity cage without the key. Gisele and Hayley were the other two. If you decided to confess to one of these three, then at least you wouldn't be completely starting from the beginning. And, since they already knew a little bit, telling one of them the rest of the story would limit the number of people involved.
But who would it be? Hayley was relatively new to the office. She was a wild card. You didn't know her well enough to really know what she was like or what she was capable of. You had very little guess about her "kink" level (outside of your wildest fantasies), which was scary. She wasn't super-close with anyone else at the office since she was new. But you didn't know if that was good - because she was less likely to tell people, or bad - because your secret would definitely be a conversation starter if she were trying to build friendships. As you considered her, Hayley didn't seem like a great option.