No worries, sorry for taking it the wrong way.
I'm not sure how I could have handled it differently. Remaining silent about my discomfort would be dishonest in my eyes, and not something I'd be comfortable with. I prefer to voice my feelings, but not let them make me nag.
No, I don't think I'm overprotective. I trust her to take care of herself and make her own decisions, though I offer input where I think it'd help. I think I'm the right amount of protective. :P
It wasn't about being afraid of her getting hurt as much as my own discomfort with the situation and person in this case.
I agreed with the part about not being required to get along with your partner's partner. That's her choice, not mine. Doesn't mean I won't voice concerns and displeasure though.