"Look, I don't see why you're still yelling at me about those photos. We agreed to still be nice to each other while you're still living here, even though the wedding is off, OK?"
You nod, wishing you hadn't gotten yourself into this fix. Now there doesn't seem to be an easy way to undo all this damage to the relationship.
You ask her, more nicely now, to please put some more clothes on, this is really unfair!