Welcome Randy,
There are no magic words that you can say to her that will change anything. As far as sitting tight, that sounds as if you are willing to give someone your power.
She gave you her answer already, when she said " I'll have to think about it." It translate's to NO. NO I WILL NOT QUIT DRINKING at this time.
Sounds like it's time, for some Randy quality time. Start concentrating on YOU. Do things you enjoy.
Step back and let her own her disease. We are poweless over the disease. Until she commits to recovery you may as well be having a conversation with a rock.
I understand what an ass they become, all the more reason to save yourself.
Sending you warm thoughts.........