She's about to retort with her own admission of being as messed up but Yua cannot find the words. Or rather, her mind is telling her to hold back, rationalizing that now is not the time to admit her experiences in Liminal and their impact.

Truthful she might be but even Yua can figure out on occasion when not to speak her mind. This seems to be one of them.

"Technically he wouldn't be wrong...it was just when we faced off, I was an adult. I did get into some big fights back on Earth, while in Inaba." She instead replies.