A super strict interpretation of the Kings law was, "Don't go into his presence without being summoned, or you die." Perhaps my terminology is unfortunate in saying Esther "bent" the law. Esther was aware that the King could extend mercy to someone who came unbidden into his presence, but she was by no means assured of that. Death is a penalty in this context. Esther knew of an immoral act about to be perpetrated on her people, and went against the King's general standing order to express her displeasure with that immoral act.
She relied on the King's mercy, but was ready to take the punishment. Fortunately for Esther, she received mercy, and I point to this as evidence of the slack between the absolute letter of the law and it's narrow interpretation, and what is allowed in the home between husband and wife. There are other evidences in places like Numbers 30:10 & 11:
And if she vowed in her husband's house, or bound her soul by a bond with an oath; and her husband heard it, and held his peace at her, and disallowed her not: then all her vows shall stand, and every bond wherewith she bound her soul shall stand."
This more than strongly implies that a woman was expected to go about speaking for her husband, without necessarily checking with him every time. Word would get back to him eventually of his wife's actions, and if he ratified them when they were
questioned, they stood. Both the King (Esther's husband) and the man of Numbers 30 are relying on their wives to act generally in accordance with their wishes. Thus Ahasuerus figures that if Esther came unbidden into his presence, something unusual is going on and he gladly extends the Scepter to her and exempts her from death. The woman of Numbers 30 makes oath and contract, and the man essentially says "What? She speaks for me..." or he doesn't.
You get the impression that Ahasuerus would extend his Scepter every time Esther came unbidden because, it's Esther, the reason HAS to be good as it has been in the past or she wouldn't BE here, right? I also get the impression that there were men covered by the Numbers 30 provision that rarely if ever, second guessed their wives. This is born out by the good woman of the Proverb, who buys and sells land, which had to be done under the cover of Numbers 30. Proverbs 31:15 & 16:
She riseth also while it is yet night, and giveth meat to her household, and a portion to her maidens. She considereth a field, and buyeth it: with the fruit of her hands she planteth a vineyard."
These are not the actions of a woman under tight control. She sounds pretty free to me.
Her husband is known in the gates, when he sitteth among the elders of the land." (verse 23)
This guy has an easy job, he's letting his wife do a huge chunk of it, and whatever she says, generally goes, because she knows her husband's heart.