Sj -I can't tell you if you are imagining this but the first step I would take if this was me was looking at the DSM IV TR requirements (the published book that professionals use in starting their diagnosis process. The very first requirement for Dissociative Identity Disorder is TWO or more personalities that are repeatedly there right? There are other Dissoicaitive sypmtoms listed in the book under other dissociative dissorders.

So if a person sees a professional for any type of dissociation the professional keeps in mind the criteria for each one and as the clients behaviors show any of these symptoms they log them in to their reports and eventually have what they need to know how to treat t hat person.

Your therapist is most likely already seen this other child part and has not disclosed it to you which is the protocal here for people who are denying their diagnosis or don't know they have this. They basically wait until the client brings up the issue but they already know and are treating that person for the symptoms they exhibit but is ways that the client accepts.

Some of my memory pieces became known to me only after my therapist talked to me while I was in them and explained it was time I knew about them.

Talk with your therapist. Whether or not you get and accept a DID diagnosis most likely your therapist has already been meeting with this other child and or is keeping the fact that there could be more according to the DSM in mind so its not going to shock her/him.

Not talking about it could cause session problems like The therapist can't talk with you about this other child until you disclose you know it there, and you not tell the therapist you know that child is there. during therapy you may end up not talking at all because you are hiding this secret and therapist not knowing you know so not bringing it up. no work will be able to get done and it could interfer with the client therapist relationship because your therapist may think your sudden change during sessions means you don't have trust and so on for them and refer you to someone else.

Take care.