If you think Fiona left because she was “bored” or “mean,” you missed the point. The woman spent her entire adult life putting out fires—literally and figuratively. She missed out on her own youth, her own dreams, just to keep the lights on for Frank and the kids.
The truth is, Fiona hit a breaking point that was a long time coming. She had finally built something for herself—a successful laundromat, a decent apartment, a shot at a real life. But the South Side kept pulling her back in, screaming, needing, draining. It wasn’t that she stopped loving her family; it was that she finally started loving herself more.