She smiles up at her aunt. Well she has to be responsible she's sixteen and regularly left without supervision. Under normal circumstances that would translate into wild behavior but then anyone who knows Kushina also knows that the woman can be scary when you misbehave.

"I don't mind. I thought you might prefer some time with Naruto-kun and Minato-ojisan." She's aware of the toll it takes on her aunt to be away from her family for extended periods of time. She waves for her aunt to join her and pops another bite of okonomiyaki in her mouth.