1. Any perceived contradiction you have, feel free to discuss if you like. If not no big deal.God always is in control. His control is not based on: predestination, Unconditional Election, Depravity of Man, etc. This is a man-made system that contradicts itself at many places.
Esther had a decision to make. It was her decision. However she asked that Mordecai and their people fast and pray for three days. This would be ridiculous and of no consequence if everything was predestined, predetermined by God. Why pray at all. There would be no reason for it. The outcome is fixed.
When Esther made a choice, it was her choice. It was clearly marked by her words: "If I perish, I perish." It was a move of great courage. But if Esther believed as you believe (really fatalism); everything is predetermined, she wouldn't have said that. "I will just go; "que sera, sera;" Whatever will be, will be." That wasn't quite the attitude expressed in the words she uttered.
2. Esther did ask for fasting. Even though she didn't ask for prayer, I am sure it happened. Why would they pray and fast? Most likely to for Esther's personal strength and courage in this matter. They weren't trying to force there will.....Esther wasn't even trying to decide. In the same message she asked Mordecai to fast, she said she would go to the king. It was the obvious truth delivered to her by Mordecai that brought this decision on. "Do not imagine that you are the king's palace can escape any more than all the Jews. For if you remain silent at this time, relief and deliverance will arise for the Jews from another place and you and your fathers house will perish. And who knows whether you have not attained royalty for such a time as this?" This shows Mordecai's remembrance of the Abrahmic Covent and seeing God's Sovereign will be triumphant. The last verse shows how God's providence shapes our will, and accomplishes his will. Esther believed Mordecai. She knew that she was placed in royalty to make that decision. Which is why she did say. Great example of God' Sovereign will being carried out by his providence.
Once again, an individual had her choice shaped by, her inclination of her heart/nature, and a message from a faithful servant of God. God did not leave her to her own absolute free will. He was there to show her what to do here.
The problem with the verses you are giving us, is that they all are part of God's Sovereign plan of redemption. We will always be able to show you how sinful or regenerated nature's are responsible for these choices. God's plan of redemption can not be stopped, not even by the powerful satan. No doubt if humans could will against God's sovereign will, satan would surely be able to stop God's plan of redemption. But we can't and satan is nothing more than an insect in the hand of God waiting to be crushed.
As said many of times on this thread. Free will is a slave to sin, or a slave to Christ, depending on your nature. Free will can never conflict with your nature of God's Sovereign will. Our will is NOT bound by God's perceptive will(God's law). This will of God we can violate. Otherwise we could not sin.