Verrall was born in
Penrhiwceiber, South Wales. Her father was a musician. She attended the
University of Wales, receiving a B.A. in music in 1937, and a B.A. in English, German, and Latin in 1938. She also earned a
Licentiate of the Royal Academy of Music (LRAM) in London. Verrall was head of the music departments in various schools in the South East of England, including Aldershot Manor Secondary School, The
Winston Churchill School, Woking (mid-1970s),
Elmhust Ballet School, Camberley and
St. Catherine's School for Girls, Twickenham. She composed at least 90 sacred and secular songs, as well as chamber music and musicals for children which have been performed on radio and television. Her cantata for schools
Johnny Appleseed (1971), and her hymn tune
Cross Over the Road were perhaps the best known of her works. == Chamber ==