Lin - Thanks. It's good to have perspective that it can be normal for insiders to not talk outside. Most of mine don't, but have done so enough for me to at least know they
can. She actually kept growing until 12 and initially I thought she was an adult, because she continued to handle a lot of my adult sexuality. She doesn't know any signs, but T understood when she patted/pointed to her throat. It seems like drawing, writing or going through someone else like she has might be best, but the latter only works if she's not up alone, which is what I think happened last night. She has almost always been up with LY (5-6) or River (8?) so far, as thet both share trauma with her. Not sure about music. It can help, but some are triggered by it, since one caregiver is a professional musician.
ashes - That is almost exactly what I do, except it is less conscious and hard to break off without letting the big brother get reall pushy with the kids. Translating was the way therapy worked almost exclusively the first nine months after diagnosis. It is only in the last couple of months that T has been getting direct contact from other parts on a regular basis. It was very intermittent before that. I'm getting better at getting out of the way and letting them out, but worse at coming back out. I think, in this case, it is important that she be able to experience T's safety. That someone will be there for her, give her a hug, etc., and not expect anything from her. When he came to sit in the chair next to where she was hiding on the floor, she kept leaning into the chair to be close to him. She was hiding under the sweater and he patted and reassured her and it helped her feel better. She wants to be able to communicate with him, but she can't if nobody else is there. And, because I have a denial problem (I call/enable/collude with the part who does that unconsciously), it really needs to be another little or a part who believes her to translate. I wonder if I could get LY or River or CT to always come out with her and not go inside when the hard stuff comes up.
JJ - I knew from Ashar you would understand the inability to speak. You are right that both he and this part can learn and grow. I think I have spent too much time avoiding her and do need to pay more attention. I avoided her because of the present day problems she contributed to in my marital intimacy. She has said things inside at times, but every time she has represented (just how she feels--I have never seen what she looks like, unlike all the other kids/teens) as older...so I'm just confused about whether the one who talks is even the same, because she feels much smaller when trauma stuff comes up. I don't know if she is afraid of speaking or if she believes something is impeding it. She nearly always has a gagging sensation when up.

I really have no idea what she might be into, because she basically only existed for this specific thing and has never gotten safe body time until and excep in therapy. The page she chose to write on had some drawings. A mask and a bird. I think she liked them, because she chose that page instead of finding a blank one and I thinks she was sad when she accidentally wrote over/tore the drawings while furiously circling, "Can't Talk." Maybe she would like to drawor paint? LY really wanted to, for a while, when processing some of their joint trauma, but doesn't want to as much anymore. I wonder if it was on behalf of this other girl...LY likes to draw, but this was more like a need. We bought paints for therapy and everything, but it didn't work out timing wise, because I waited too long,
SnakeskinSoul - Thanks. The invalidation is at least partially my fault. I'm complicit in a way I don't fully understand yet, but which precludes me from deserving much sympathy. I don't think my T signs at all, but he has a lot off intuitive undersyanding and will usually ask yes/no questions that are on target pretty quickly. I just feel her aloneness in it, not being able to share more. I think she can read and write OK, but she doesn't necessarily have the vocabulary to express what she is feeling. Even talking wouldn't help with that, though.
Thanks, all, for the help. It means a lot that you responded. I'm trying to figure out how we can get her some more time tomorrow morning (our next session) to see if she can maybe draw with T.