[Maybe in a weird way, that's the thing she needed to hear most of all. From Lee's perspective, she's not left behind -- she's still here, while the others are gone back. It reframes things a little for her.

Instead of looking at Sasuke and Naruto's backs, she's facing Lee, metaphorically speaking. It brings at least a small smile to her lips.]

Thank you, Lee. [And she means it; those words are heartfelt.] That... that really means a lot to hear.