Aw, you should have included the next page. It's the most important one in the whole story, in my opinion:
Astra's frustrated and angry, and it's totally justified... but then she decides it doesn't really matter and just lets it go so she can continue living her life.
Sure, she's graduating from college and has a multiverse of opportunities at her feet, and that's a nice rite of passage, but it's her decision not to let the world's ugly side preoccupy her that really shows she's an adult now.
I was kind of blown away by her strength, personally. The first Astro City comic I ever read was the story of Astra's grade school hopscotch rivalry, and now she's all grown up, showing more maturity than a lot of people twice her age. I feel really proud of her. :)