That's not appropriate behavior for somebody who is supposedly working on his marriage! This vagueness isn't working! I can't sleep when you are out! You can't do that! If you go out you have to tell me where you are going!...."
So ask her, "is that a boundary that you need while we are working on our marriage?" Ask her what vagueness means to her.
She definitely wants it as a ONE-WAY boundary. She is clear that she does NOT want to tell me where she is going or when she will be back. If I ask, she will answer, but only with vague answers, and If I call her on it she get's very defensive and fights back like a teenager.
If I give her the exact same answers, however...
Me 42, W 39, S8, S6, S2 M 11y, A & ILYBNILWY 11/08 Walking away from a bad situation.