"So my biggest question/fear -- what if I'm the narcissist and I'm the one with the blinders?"
This is the truth: I wondered the same thing about you myself. Indeed, I wondered if whoever put up the link might have said it was for H in the hope that you would take it yourself. I wonder what your score was. It doesn't sound as if H fits into the narcissist mould well at all. But did you?
Here's something to think about -- whether or not you did score high, you project yourself as someone who scores very high if I "take the test for you" as I perceive you. Does that bother you? Do you see why it might even sound narcissistic that you believe you could take the quiz for H better than he could take it himself?
The incredible resiliency of your belief system does indeed make me wonder about the narcissism thing. It seemed like before you were beginning to get closer to some honest introspection, but now you've snapped back to a pretty rigid understanding of yourself that casts you as the perfect, capable, achieving, very unrealistically well-adjusted spouse.