Thank you to those who replied. I am heeding your advice and keeping the anger in check. There has been very little communication from her since the "Farewell" text messages. Earlier today she sent a text asking if I would look after the dog Saturday night. As I have the kids that means she's planning on spending the evening somewhere else. For reasons I won't get into, I suspect it is with a new OM. In the past, the pain/hurt associated with that possibility would have undoubtedly led to an angry and/or sarcastic text message which would have digressed to a whole series of them. I replied: "Please don't take this the wrong way as it is not meant to be mean spirited. I'm not ready to take the dog while you pursue a relationship."
It probably wasn't the best response. However, it was better than my typical angry/hostile response (i.e. "shall I tell the kids you're having a sleep over").
