In Esther 1:9 we read, “ושתי המלכה עשתה משתי נשים” Vashti the queen was made of two women. Aside from being biologically surprising, what are the consequences of this in our understanding of the Megilla?
One consequence is that Achashverosh had two mothers-in-law. This is further evidenced by the fact that the megilla provides both their names:
- "כְּשֹׁךְ, חֲמַת הַמֶּלֶךְ אֲחַשְׁוֵרוֹש" - "Keshoch, the mother-in-law of Achashverosh". (Esther 2:1)
- "וַחֲמַת הַמֶּלֶךְ שָׁכָכָה" - "And the mother-in-law of Achashverosh was Shachacha". (Esther 7:10)
What makes a person a person? His heart. Indeed, when Rashi wants to emphasize that a group of people are like one person, he says "בלב אחד / with one heart". So when the verse you quoted says Vashti was made of two women, all it means is that she had two hearts.
She is, in fact, a Time Lord.
As such, she is able to regenerate into a new form when suffering an injury that would kill humans. This explains why the book of Esther never specifies that she died, only that she lost her position as queen: although Achashverosh tried to kill her, she simply regenerated.
Moreover, Vashti's being a Time Lord and concomitant ability to travel through time explains her appearance at points in history we would not expect her to be at. For example, Ruth 1:9, "ושתי כלותיה / Vashti her daughters-in-law", and Genesis 19:30, "ושתי בנתיו / Vashti his daughters", which use the plural because of Vashti's dual nature.