The problem OIN is that if you only want to be a good person while she is showing some sliver of hope and she walks out the door.... YOU have NO REASON to be an adult anymore.
Your reason for being an adult must come from YOU... don't use her frown to put you down or her smile to life you up each day.. or you will LOSE this battle I promise you that.
At the end of this battle the wondeful thing is that YOU will be a great partner, for her or someone else.. and your marriage.. this one OR a new one will be MUCH better becuase of the work YOU are doing... so there is no reason to not do it if she's resisting... its for YOU, not for her