Well the first thing that pops into my mind is your mention of her newish relationship. Perhaps that is the source of her motivation. If she was drinking all those years without others knowing it seems obvious to me that those she had close to her in her life were enablers and helped to keep it hidden. Is it then possible that this particular relationship is not an enabling one? Could it be that this chap's expression of love is to encourage her to do get help? I am not suggesting others didn't love her I am saying this husband may have a different manner of doing so.