At first her gaze moves away, not directly looking at Alfredo when she knows he's holding his gaze on her. Madoka hesitates, trying to find the right way to put her feelings into words when he seems so genuinely interested. There's no need to hide any of those feelings, after all, right? They're both very similar - just kids. Not used to this. Not having any of those amazing powers other people on the train have. Alfredo would understand, right..?

"I wish I could've helped fight."

That is the core of the answer, but to clarify, she finally does look over at Alfredo, hurriedly speaking on. "I-- I mean, I can fight. Somewhat. I'm pretty good at archery, but.. I don't think that could have done anything to those robots. I just would have gotten in the way, or I would have gotten hurt, and then people would have been worried about me. I wish I was someone strong enough to tackle even big danger like that."