I remember reading that book "Behold Your Queen" when I was a young girl! It was in my public school library, too. The same author wrotes a series of books based on Biblical heroines like Ruth, and Rebecca. I read them all!
I remember the cover for "Behold Your Queen" had a picture of a lovely young woman in a becoming gown with outstretched arms. I also remember the character of Esther being dressed in a simple gown, with only a bunch of roses for adornment before she went before the king. I also remember her embroidering with her cousins who were complaining about the then Queen Vashti's preference for the "fashionable" color of yellow...which only Esther (or Hadassah) could wear becomingly. Was this the same book? I'm sure it was. Oh, the nostalgia. Wish I could remember the author's name.
I happen to be sewing an Esther costume for a young lady for her churches' harvest festival. We Googled Esther for ideas and came up with the website for this thread's film. The photos looked wonderful.
Here is the website url for the upcoming film: http://www.queen-esther-movie.com/qe/10-October-19-2005.shtml
The author was Gladys Malvern and the book was published in 1951. Even though my local high school was rural with a not so large library, "Behold Your Queen" was my favorite. I can't remember how many times I reread that book but I do remember it was my favorite in the whole school library. I'm so glad you remember reading the book too. That goes to show how small this world really is.