u/RexAndDrex4ever

I recently started trauma therapy (DBT) and when talking about the stages of the therapy work we will be doing, my therapist said that dissociation which I unfortunately have is a choice. When I pointed out that it doesn’t feel that way for me she insisted it was and that research showed it too.
In a session, I dissociated. We talked about it the next session and I said I was overwhelmed with the topics that were addressed and she said that dissociation seems to be my comfort zone and therapy work is not possible if I dissociate in session. I just wanted to ask people who’ve done trauma therapy if she is right and eventually I will be able to control/choose not to dissociate or if she is wrong? Thanks!