Peter to follow on what BL states, nothing looks weaker than to state a boundary, and then not enforce it when crossed. Telling your WAW that you will divorce her if she has a PA, and then not following through will not be a good way of moving forward.
If a PA is a boundary you still say nothing. If you find out it is a PA then you go file for D. I find that most LBS say things like this to their WAS in an effort to manipulate their WAS to do or not do something. Really all it will do is make her hide it even more until she is ready to have you D her.
As BL said before, action not words. Boundaries are for you to take action once crossed, not to try to alter someone else's behavior.
Yes noted. I have not told her about my boundary btw. I don't intend to either. At this time I am trying to understand the full implication of this intent and mentally preparing myself for it.