She wanted to go back out there but she also didn't want to leave Mooshoo alone. "I'll stay here for a bit"

Yuffie wasn't ready to tell him the details of her thoughts so she left it at that and sat curled up on the floor next to Mooshoo's bed. It wasn't a comfortable place to sit but it was the closest she could get without waking him. "Thanks. I guess. For helping." She wasn't really good at saying thank you.