"Oh!" Well, that certainly makes sense. She remembers Connie's concert, in order to keep her violin, and Shin-ah going around taking his mask off so he wouldn't have to give up his squirrel friend. So this is another such instance, then.
"Your shield... It might be a good thing to have, here, something to defend yourself with." After all, Miracle Country is nice and cute half the time, but the other half... not so much. "Is there something I could do to help? It seems to be for a good cause."