To me, limerence meant longing for another, but the feeling was unreciprocated. Upon googling, i see they categorize relationships as limerent-non-limerent, or both limerent, etc.

So i can see why you called it limerance, because you were always enthralled by her, and still are?

Have you thought about conditions for reconciliation? The kids will be around for only a few more years. If she truly cannot make it on her own, would you want to live with her if she were actively drinking? Do you attend Al-anon?