She asked me to email them to some of our very close friends. So I did. Our friends almost immediately emailed us back and they all just gushed over how beautiful she looked (perfect!).
Is this "in character" for her?
I cannot imagine any circumstance or any scenario under which I would want nude pictures of myself mailed to our friends. Not because I'm particularly prudish (I'm not) but because it's really none of their business.
The other thing that strikes me is that she asked this of you despite the fact that she knew it would be torture. Red flag number two.
If I were you I'd keep my eyes wide, wide open. Trust is fine. But there's such a thing as love being too blind.