1)
Verse 5 says "va'Ytzavehu Al Mordechai." Why does it say here "va'Ytzavehu El Mordechai"?
1.
Malbim: She feared to send him a second time to Mordechai, lest Haman's men notice that Hasach is doing Shelichus from Mordechai to Esther 1 . Rather, she told Hasach to see that the words reach Mordechai via another Shali'ach.
1
Targum (12): Haman saw Hasach coming in and out from Esther. He got angry at him, and killed him
