Other. I have told her sexual fantasies, but no in the typical sense. They are fantasies but not things I actually enjoy sexually. I want them to happen but it has nothing to do with physical pleasure but rather punishing myself and "reenacting abuse" as she likes to say. I probably wouldn't have told her these fantasies if not for the fact that I have made them happen in the past and recklessly endangered myself.
Personally, I don't feel the need to tell her about fantasies unless I act on them and they are a problem that I need help sorting out.
If I did want to talk about this, I would probably consult with a more sex-positive therapist. She is more of a sex-negative and everything is a reenactment of abuse type of therapist. Which is fine when that take is accurate, but not so helpful otherwise.