All that can presently (December 2022) be gleaned about
Allie Gilbert from sheet music covers and by Internet searching is that she was presumably an American actress/singer who has been featured on 2 works published between 1894 and 1900.
Her portrait on the left is taken from
My Yaller Daisy (1900) music by
William Loraine, and published by
M. Witmark and Sons, New York, Chicago, San Francisco, USA.
Surfers are welcome to contribute any further information about this performer.