I'm thinking that letting her know the way she has been been treating me is unacceptable and that I'm not going to just wait around for her will clarify where I stand and then I'm following that up with actions. Until now I've been a sad sap just desperately wanting my W back.
What actions are you going to take?
In general, I think it's best to just act and skip the "letting her know" part--unless you are planning to make a major change in living arrangements or finances. If you are, then I think giving her warning is best. If you give warning, be matter of fact. Keep it focused on what you will do, not how bad her behavior is.
Me: 44 H: 44 Kids: 20, 16, 16, and 10 Together/Married: 22 years H announced he was emotionally detached and considering D: 4/4/16 H announced he is going to try to stay and reconnect: 5/1/16