When offered a drink, you shall not accept it. There is an error in the logic in this scene. Let me explain:
-Would you like a drink? I was just about to have one.
---Further in the conversation
----You are not drinking?
-----You must select No, even though this is logically incorrect. I chose Yes at first, and she drank it!
Generally, people are used to this error in communication, and use such as their basic way to agree/disagree. I hope this will change in a hundred years from now, at the very least. Ask me, if I am not a gamer, and I would respond, with a No, by not giving them my agreement, because I am in fact a gamer. Ask me, if I am not an alcoholic, and I would respond, with a Yes, by agreeing to that, because I am not consuming any alcohol.
You can shorten this sequence, by picking up an item on top of the nightstand in their bedroom, and leaving that house afterwards.