((Echoes))
Misattunement is painful. It sounds like you have been on a different plane than T. Which part of you showed up last week? Maybe it's a part that hasn't connected with her yet, so it felt like a new experience? I don't know but it seemed for me that sometimes when I felt that strangeness, that there was a different part of me presenting in therapy. In those times I tried to tell him how I felt and together we muddled through. But it didn't always work. The only thing is to keep going because right now you are in an obstacle filled place. I think of a tunnel and you have come to a very dark spot and you can no longer see T in front of you. But she is there. There's light ahead!
Hey on a hunch I ran an internet search and came up with this article. Maybe it will help. I think I'll read it too.
Article on the role of attachment