Well, there's no way Madoka can turn down the thought of cooking together with someone. She enjoys cooking in general way too much - especially with how much she's been improving ever since she got on the train! - and it's only better with company.

And Lea seems nice enough, right? It might end up being fun.

"Alright, I'd like that. Please feel free to look for me whenever on the train to cook together." She'll be ready at any time!