[She'd ran away before. She'd ran away a lot. Back home, it was sometimes unavoidable. But she didn't have to run away here. She could have stayed, and just listened to Saber's rational words.
But Rider wasn't rational. She wasn't a "hero" like Saber was. Her physical existence in and of itself was the sign of the Holy Grail being corrupt. So she felt no need to make herself into a hero.]
[So she runs. And runs and runs. She sprinted across rooftops and rooftops until she finds that familiar building. In one quick swoop, she unlocks the window, and jumps inside.]