Flows into the ending of chapter 15 of Pulling Together

Why?

She surveyed herself in the mirror, turning back and forth to check her profile. She did like the dress the girls had picked out, and the color was magnificent. For the last week she'd asked herself why Ryan had decided to ask her to prom; she never thought she was pretty, just average. But as she pulled her hair up and looked - really looked - at her reflection, she finally saw what he saw. She was gorgeous.