Thanks guys, I wrote her a text today that if S made her happy, I support her etc. as you suggested Stander. I just got off the phone with her and she sounded like it softened her a bit. My greatest fear is that she actually leaves. My greatest hope is that she reacts like you said, because the cage door is open, she feels free and reconsiders leaving. I truly love her and this is the hardest thing I've ever had to do. Heartbreaker!
I can relate, it was the hardest thing I ever did too. I'm convinced she would have left regardless, but at least I took the pressure off in having that talk with her. And don't be afraid of S, once my W left it made it much easier for me to detach, all the D talk ceased, all pressure fell away from W and we've been getting along better than in a long, long time. Hopefully she won't leave, but if she does then that is certainly not the end of things.