She shakes her head. "No, it was a reaaally long time ago! It was maybe my second mission.. or my third?"

Which means it's a long time ago, since Madoka has been on this train for so long now.. "So don't worry if you don't know about it! I think most people who are on the train right now wouldn't know."

It's an easy topic to shake off though, especially as Persephone brings up another important point.

"But.. right! It's important to cover your head too when it's cold.. I wonder if they have some earmuffs anywhere here?" Since it's a lot harder to wear a hat for her otherwise unless she wears her hair down.. But Madoka is rather attached to her hair ribbons and pigtails by now.