1)
Why did he say to rush Haman?
1.
Vilna Gaon: He saw that Esther was in great pain. He wanted that she will request soon, and not be in pain.
2)
Why does it say "La'asos Es Devar Esther"?
1.
Vilna Gaon: He wants to do her request [to end her pain].
2.
Malbim: Do not think that Haman's coming will honor Esther. Rather, he will come to fulfill her command, like a slave who must do his master's command.
