Although it would ordinarily seem that a women-only party would be more conducive to certain standards of modesty, the Talmud on the bottom of Megillah 12a makes clear that Vashti wanted to tempt the men to sin just as her husband intended (as mentioned in a previous post). As the Maharsha points out in his commentary to the Talmud, had Vashti wanted real privacy in accordance with moral standards of the day, she would have held her party in the women’s palace. However, Vashti’s party was neighboring the men’s party. Rabbi Dovid Feinstein points out that her party was separate in accordance with the laws of modesty. However, there is an added sensual pleasure in a sin’s being almost within the law. The moral code regarding what was forbidden them was slowly being eroded.