My wife and I are in a DADT relationship. She knows I crossdress, and I go out with CD/TS friends a couple times a month. But all she wants to know is when I am leaving and when am I coming home, not even where are you going and who will you be with. We hardly ever talk about anything else.
She doesn't want to see me dressed. She says she is a very visual person, and will never be able to get the vision of me dressed out of her mind.
And yes, you can't change her mind. That's my personal experience, and the assessment of both therapists that I've seen.
Also, some here used the word "Acceptance" for DADT; I would use the word "Tolerate".