I've been to that point 3 or 4 times. I mean really been there. A couple of times W asked me to wait and the other times I decided to put it off, but in each case, W moved a little.
Usually she said she'd move a lot, then backtracked or told me I had misunderstood, but in each case there was some definite movement back toward the relationship.
I would caution you against using it as a ploy, although I've seen some people advocate it. If you make the decision, do it because you are prepared for the outcome...not as a technique to get her to come back. If it backfires, you pay the consequences.
