Original Commentary
Of course, Brisbane should know by now that Sofia would never admit to needing help.

Modern Commentary
Yes, his younger sister (who is decidedly not a performer) is staying at the theatre too. She was at a private school and was sufficiently headstrong that it was decided she should go on independent study elsewhere. They didn't care where as long as it wasn't nearby. So she got sent to live with her brother in a vaudeville theatre. - Terrence