Hi Peaches,
What you are describing sounds like what my T has said is called DDNOS. I have the same exact symptoms, my T says I will call her and have a different voice. She once told me, kinda jokingly as to not alarm me I think, that if my parts had names I would have DID. Recently we have been talking about my "little girl" part. I feel embarrassed about that part and try not to let her out, so to speak. But apparently, sometimes she calls T <sigh>. I don't usually refer to that part in the third person, but it makes it easier to explain how it feels. I, me, would like to kill her off because she really ruins things for me sometimes by being too needy.