Hermione watched as Harry's cat took off under the couch. That reminded her that Crookshanks hadn't greeted her when she came in. That could only mean that he'd taken up under her bed in order to escape Teddy. That cranky cat never did have much patience for noise, Ron, or anyone under the age of fourteen.
"No worries. I've got a desk in my room. You boys have fun and let me know if you need anything." She walked over and hung her robe on the hook by the kitchen before heading back to her room. "I'll check on you guys before I go to bed and if you're still up maybe we can tell stories."