I would calmly sit her down today and say something along the lines of "I'm not sure why you didn't come home last nite, after saying you'd be home by 11, but without a transparency plan in place I have decided that I can't feel safe in the marriage. And I of course would also be fully transparent with you.
I cannot live in a marriage where my wife stays out all night -- not considering everything that's happened. And I'm sure you would agree that it's not best for (S4). I have to go (INSERT "GAL" ACTIVITY HERE), but I hope you'll give this the seriousness of thought that it deserves."
And then I'd leave.
After the loosey-goosey "plan" of the past week, she's testing your boundaries. This was totally to expected. How you respond -- TODAY -- will be crucial.
