Elle does not try to drift toward the edges. But at the same time, drifting seems to be what she's doing - like she doesn't know where to go, she moves around like a car in the wrong lane.

Eventually, though, she sees X, and comes over to her.

She can say 'Happy Birthday,' but not in the way she would mean to, here. It doesn't seem like something you say to X, even at a birthday party.

So instead, looking at the decorations, she asks, "Do you like them?"

(There's no judgment in it - it's something to say.)