Interesting, so everything so far has been but a dream. I can see how dreams seem so real sometimes but enough to see a therapist? He is definitely fixated on this, poor guy. Muir does seem extremely sensitive, noticing the therapist's eyes dilating.
you're a very perceptive reader - but to be fair to Muir, he sees the girl, although indistinctly, just after awakening and he is struck by how life-like this experience is - if not a dream, then a powerful hallucination. It would be scary, I think.