I have DID. T3 lets it go, she always knows it is happening and will sometimes draw my attention to it. For her, it's all grist for the mill. She does allow time for me to get back in my head at the end of each session and will help as needed. She is very good at detecting any dissociation.

T2, not so great, but when she notices she tends to insist that "I" come back. One time she let me leave as my 14 year old.

Neither T2 or T3 likes it when the 14 year old is in charge when I leave because they don't think she can drive. However, she is quite confident that she can drive.