W, I am only going to communicate with you about emergencies to do with S. (note - boundary setting is about what you are going to do, not about what you want HER to do. She will, and can, continue to do what she is doing. How you respond is what you control.) So, W, if you call me I will not answer. If you text me what the emergency to do with S is, I will respond if it is in fact an emergency. If you do not text specifics, I will consider it not an emergency and will not respond.
That is what I would consider really clear. And that would inform you whether to respond to "I'm really sorry" texts (no, and don't give it a moment's thought) or to "call me" texts (no, because you are being ambushed with non-emergencies). or to "I want to know how S is doing" (no, because she knows how to reach S directly).
^^^^^^^^^
Count me in!
Freedom is just another word for nothing left to loose. V 64, WAW
