User blog comment:Ordeaux26/Pure Evil Proposal - Iago (Othello)/@comment-31330278-20191111182228/@comment-30634893-20191111185151

Well, technically Emilia had already semi-ruined his plans at the time by revealing to Montano and Gratiano that she had stolen Desdemona's handkerchief for Iago; not knowing that he was going to plant it in Cassio's quarters and further the illusion that Desdemona and him were having an affair. He killed her more out of rage than pragmatism.

So...I guess that makes it better?