 She obtained this role after beginning a concert singing career in America in 1887, moving to London in 1890 and continuing her concert career in Britain.She became one of the last of W. S. Gilbert's actress proteges and continued her acting and singing career in Britain and America for several years.After McIntosh retired from the stage, she lived with Gilbert and his wife until Lady Gilbert's death in 1936 and eventually inherited Gilbert's estate, helping to preserve his legacy by selling his papers to the British Museum and leaving the remainder of the Gilbert estate to the Royal General Theatrical Fund.