Sasha's thinking was still quite a bit cloudy, but she didn't feel very drunk. As long as she didn't turn her head too quickly or anything, she felt fine. She looked around as he went to fetch the water. She was neither impressed nor offended, though later she might be a bit surprised he lived in a muggle building. For now, her alcohol-addled mind simply felt at home with the electricity.
She took the glass and took a sip, but didn't think she needed the water nearly as much as he did. She shook her head at his suggestion of going to bed, but had to close her eyes and reach out as the floor lurched.
"No, I want to sit," she said. Apparently drunk Sasha was far more decisive about what she did and didn't want than sober Sasha, and had far fewer inhibitions about those things.