Kate was commonly the life and soul of the conversation at home; but she was more silent than usual upon this occasion (perhaps because Tim and Miss La Creevy engrossed so much of it), and, keeping aloof from the talkers, sat at the window watching the shadows as the evening closed in, and enjoying the quiet beauty of the night, which seemed to have scarcely less attractions to Frank, who first lingered near, and then sat down beside, her.
There are no more uses of "aloof" in the book.
Show samples from other sources
People who don’t know her, think she is aloof from the rest of the team, but she is just focused on the game.
She focuses on her work and is aloof from office politics.