(1) Esther's authority was 100% derivative of her husband's and extended only to the extent of his permission and over his kingdom, just as a wife's authority is absolute under her husband's in their own home.
Thus Esther is a not a model for women pastors in church, which is a different kind of government.
(2) At first glance, Deborah is a more plausible model for would-be women pastors. She led Israel, not a pagan country, and her authority was not derived from her husband. It was God's will for her to serve as she did. But those who think Deborah is a model for women who want to lead in church today overlook or ignore Scriptures that clarify the unique nature and purpose of God's elevation of Deborah to leadership over Israel.
God raised Deborah, a woman, to lead Israel at that time in large part to judge the men of Israel for their cowardice. She mocks Barak for refusing to lead Israel into battle because he wanted to hide behind the skirts of a woman. [Judges 4:8-9]
That point is also clear from Isaiah chapter 3, which is a judgment on Judah and Jerusalem. Part of God's judgment is that children and women will rule over the weak men: "My people -- infants are their oppressors, and women rule over them. O my people, your guides mislead you..." [Isaiah 3:12]
Some things don't change: today, thousands of years later, feminist guides still mislead many, including many well-intentioned Christians in the church. The fact that they're succeeding is evidence of God's judgment on this generation.
To assume that one who comes to a different conclusion about the role of women has been misled by feminists is a mistake.