Why the hell is she going on a "couples weekend", without being part of a couple? You should be there. Are you sure that she isn't going to be coupled up with someone else?
I agree.
This "couples" weekend, I doubt she's going alone.
Speak to her, tell her this, "...this "couples" weekend you're attending, if you happen to be going with some guy in place of me, make sure you pack your stuff and move out before you leave for that weekend because you won't be coming back here after that weekend - now you know. I won't ever tolerate that crap in my life, once you cross that line, keep moving in that direction because you aren't allowed back, like I said, now you know, you have no excuses."
Going single to a "couples" weekend, I don't think so.
