If it's a case of will you pose naked or not, then that's a fair question to be asked. And I guess you gave the right reply, considering that you have a Dom to answer to. Having said that, I wouldn't have any issues myself about letting wifey pose nude. (She wouldn't do it, but that's another topic.)

The second question is, do you feel completely at ease in all respects, with the group you are posing for?