Why was Esther not included among the Dead Sea Scrolls?
It is probably not just because it is a relatively short book, because the Dead Sea Scroll library is very extensive, and there are even shorter books that were found. The Meaning of the Dead Sea Scrolls p.119 says that it is likely the Qumran community rejected this book for theological reasons. We do not know exactly why, but one of a number of possibilities is that they would be against Esther being married to a Gentile king (though she had no choice in the matter). Q: In Esth, what are some of the translation differences between the Hebrew and Greek Septuagint? A: First, while the Syriac (Aramaic) and Jeromes translation follow the Hebrew, the Greek Septuagint has 6 additional sections. 1. The start of the book mentions a vision. This adds 301 Greek words. 2. The alleged text of a letter is added toward the end of chapter 3. It adds 244 Greek words. 3. The end of chapter 4 adds 582 Greek words. 4. The start of chapter 5 mentions Esther praying and adds 70 Greek words. 5. The end of