All that can presently (June 2022) be gleaned about Belle Bilton from sheet music covers and by Internet searching is that she was presumably an English music hall actress/singer who has been featured on 3 works published between 1885 and 1895.
Her portrait on the left is taken from a Billy Rose Theatre Collection photograph taken by A. Bassano of 23 Old Bond St., London.
Of interest is Oh Dear! Oh Dear!! Oh Dear!!! (1885) music by Fred Gilbert, and published by Chas. Sheard & Co., . Its front cover states that it was sung by the Sisters Bilton i.e. Belle and Florence Bilton.
Surfers are welcome to contribute any further information about these performers.