Ah, Chapter Three. As much as I loved you (Vernon! Being a jerk! Petunia! Also being a jerk! Dursley! First steps on the road to being an okay guy!), I didn't really want to draw you.
But Petunia, you horse-faced, bony-jawed, judgmental you...
She stopped and looked back. For a moment, Harry had the strangest feeling that she wanted to say something to him: She gave him an odd, tremulous look and seemed to teeter on the edge of speech, but then, with a little jerk of her head, she bustled out of the room after her husband and son.
I wish she actually had said something to Harry. It kind of makes me sad that, after all the revelations about her later in the book, this pathetic showing is the last actual time we see her. I had hoped for more from Lily's sister. Oh, well.