Let me just say first... EVERY SITUATION IS DIFFERANT.
That being said, from my personal experience, the "I don't know if I'll feel this way for ____ (insert amount of time)" talk is BS! It's either a way she thinks it hurts you less, or her way of not dealing with the issue... maybe not feeling guilty or what ever. I know that "mine" kept saying, and continues to say it, but I am focusing on my KIDS, and then myself!! She chose to end things, so she can live with it. I know "Mine" runs from all of the feelings, so she is trying to not deal with her feelings of remorse or guilt or what ever. In the end, she, like yours, will have to deal with THEIR decisions. Don't stand paralized waitng and hopeing, focus on you, and what you want to do for yourself! I'm not saying to let go of hope... just don't focus on it. Hope today goes well for you, followed by tomorrow, then the next day... see where I'm going here... ONE DAY AT A TIME.