Quote: She didn't get upset and instead said it not only needed to stop on Sundays, but it needed to not ever happen again (I assume she means drinking too much and then feeling the way she does the day after) and she "knew what needed to be done", which I assume is to stop drinking.
That's a couple of assumptions in there, GH. I would suggest that you wrap up convos by summarizing an action plan to make sure that both of you are on the same page:
"So, just to make sure we understand each other, you are agreeing to stop drinking on Sundays, correct? Is this a plan that you are implementing immediately?"
The LORD is near to all who call on him, to all who call on him in truth." (Psalm 145:18)