Thanks, Raliced. Not just today, but for all the times you have been looking out for me.
I surmise, then, that such a boundary (for lack of a better term) is not enforceable - as it was not in the case of your STBX.
It is just another reminder that I cannot control my W, that she will do whatever she pleases, and, most importantly, that I really need to move forward with D.