WOW! I’m curious has your wife come to you in a vision while you slept?
I have had a few experiences myself.
To answer your question - no, she has never appeared in visions - awake or sleeping.
That said...
My wife, literally “the girl next door”, passed at the hospital ~ 5am. By the time I returned home, I was quite exhausted from being up 24 hours and, of course, the experience. I sat rocking in my wood rocking chair feeling totally numb and very clearly heard her voice whisper in my ear, “Honey, I’m OK”.