He is not her god--yet he speaks with such authority. He instructs her on happiness.
". . . being happy for yourself . . ." he says and she contemplates the meaning of those words.
She wonders if he realizes how happy she is with herself, with who she really is. She wonders if he realizes how very little regret she actually has in her life. She wonders, vaguely, if he realizes that what makes her happy is trivial at best.
To make her happy can be a simple undertaking, if one looks in the right places. He's looking away from her. All she can see is his back and the arrogant line of his shoulders.
The fact that he's not in love with her is one of the greatest tragedies of her life.