Grace does, indeed, take them both into the room, and even closes the door behind them! She also waits for the tune to finish, but lets Strawberry make the first comment, as she was the one that really really wanted to come visit, and it'd be rude to interrupt.
"Huh." Naku says, picking up the letter. Unless, of course, she cannot. The rest of the actions are done assuming she can pick it up.
"Well that's odd." She comments, attempting to open up the letter, and read it, blatantly ignoring that it's addressed to Civvy.
Naku's starting to get real tired of today, and her patience is running thin.