"It's lovely to meet you, Ophelia," says Susan, turning them toward Thomas's lake-house and starting off. He certainly shan't mind if she uses his office, and anyway it's closer, appointed with the relevant necessities, and just as bullyable as the rest of this place. Plus there's the added benefit of being closer to Laertes's cabin there. Since Ophelia is surely only here for the day, Susan oughtn't monopolize terribly much of her time. "And welcome to this little world."