(Warning, incoming class model grouching.) I sit in a similar position all the time, either for students or at my computer, but that doesn't make her hips and her left leg look any less disconnected to me. Her hips have been drawn with way too much of a downward angle in that direction for the pose to work. And then there's the fact that she would either have to be holding the cup a few inches off her lap and in front of her, which makes no sense, or leaning way back for her arms to be that straight, and with her sitting that forward on the couch and the way her back's angled, it would be a hell of a lot of strain on the spine for someone who's just hanging out in their home space.