I think if you do that you immediately set a bad tone. She'll be defensive from the get go. If you can't reach her at a more convenient place or time, I'd just send her a short e-mail. I know it's not the best, but she communicates that way, and you can avoid letting your emotions get in the way. Look at it like a woman you are dating that's two timing you.
"W, I know you are going on vacation again with OM, right before you intend to come back here. Under these circumstances, I think it's best if you don't come back when you intend to. My understanding was that we were going to commit 100% to this marriage, and I feel you aren't on board with that. How could you be when you are still having this relationship with OM? It's my hope that we could be together again, but I don't think now is the time."
In the end, it's not the years in your life that count. It's the life in your years. Abraham Lincoln
It is hard to fail, but it is worse never to have tried to succeed. Theodore Roosevelt
