Board Thread:Roleplaying/@comment-19164168-20160929162749/@comment-25073873-20161005112336

Illya frowned and followed. She realized she said and did a lot of stupid things, but she assumed that looking like a 13 year old meant she should act like a 13 year old. And when Illya acted as one, she was very bratty.

So, it meant Illya was thinking she could get away with acting immature because she looked immature.