Emilia is silent when Desdemona wonders aloud where her handkerchief is, and Othello questions Desdemona about it. Emilia knows that she has stolen the handkerchief and given it to Iago. But she has no idea what Iago is planning to do with it. When Desdemona worries about the lost handkerchief, Emilia probably considers it a "trifle" and remains silent (Act 3, scene 4). In Act 5, it is Emilia's revelation that she was the one who stole the handkerchief at Iagoa's request that unravels Iago's scheme and exposes Iago for the villain that he is. Throughout the play, Iago has cautioned Emilia to hold her tongue. At the end of the play, Emilia disobeys him. This disobedience costs her her life, but she does not die in vain.