I give her a safeword so that I can reign freely over her without worrying if I've unwittingly damaged her, scared her beyond intent, or crossed some unknown limit that might damage her psyche.
It's more for me than it is for her.
Absolutely. It's the mental equivalent to being physically uncomfortable.Back to topic... is it sexy for me to be unsettled? If so, why? I'm curious.
If you like the physical aspects, the mental aspects won't be far behind.
Power over your body is one thing... power over your mind is far sexier. Especially for a dominant. I can be a sadist and enjoy your body. You can be a masochist to enjoy what I do to your body. But (IMO) I can't "Dom" you unless you submit to me. That's an emotional bond.
Maybe it's just semantics. But it's how you react and how you give yourself even when discomfitted, unsettled, even a little scared, that turns me on.