Hot take: Seeing someone hog the priority seat when an older person boards is my daily moral test

This woman on my train always takes the priority seat and stares at her phone, even when elderly folks get on. She makes a point to avoid eye contact, pretending not to notice them standing. I want to say something, but calling her out feels like causing a scene in a packed car. It's a small thing that bugs me every morning, and I'm not sure staying quiet is the right call.