I had learned that women are only required to fast on Yom Kippur and Tisha B'Av.* But sometimes, women are obligated in mitzvos that they wouldn't ordinarily be expected (such as the time-bound mitzvos of Purim) because of the mitzvah's historical connection with women. Is the Fast of Esther an example of such a thing? What is the extent of women's obligation to fast on this day?
*Edited to note: This really isn't correct.