Contradiction with Esther 1:17
Esther 1:15 addresses a legal question, while Esther 1:17 states the public reaction, showing a societal impact rather than a legal contradiction.
Esther 1:17: For [this] deed of the queen shall come abroad unto all women, so that they shall despise their husbands in their eyes, when it shall be reported, The king Ahasuerus commanded Vashti the queen to be brought in before him, but she came not.