[She considers it.]

But there are lots of people who don't support Kira, too. Just because some people are crazy doesn't mean the world is rotten, onii-chan!

[She looks up at him, clearly trying to encourage her brother with the power of Sayu wisdom.]

Besides, with you and dad on the case, Kira's going to get caught really quickly, I bet.

[She just assumes that Light's studying the Kira case, yes.]