Hi Griffe,
Here, it appears as if the body answers to the birth certificate name. I've been told though that one of the nicknames of the name causes a lot of distress (and anger). Other names are rarely told, according to T, because of safety reasons.
Just remember, it's all you. There are just barriers in your brain. It's not a different person inside your body. It is hard sometimes to remember that because it doesn't feel it, but maybe you can keep telling yourself that to help?
As far as "I" or "we", I'm not sure it matters? T has said sometimes I say "I" and sometimes "we". I guess it depends on which part of my brain is talking. I don't guess I ever worried about it.
People who know me just think I'm eccentric so I think when "we" is said, they just think it's my dead husband and that I got confused or that I included one of my children in my conversation, lol. People who don't know me don't even think about it, I'm sure. Sometimes people have said, "who is we?" and I guess they get some kind of answer.
Before, I didn't even know it and it always seems to work out so I've not really worried about it.