Eurydice is the wife of Creon and the mother of Haemon, Antigone's fiance. She appears only briefly, near the end of the play. She has a short dialogue with a messenger and demands to hear a full and truthful account of what happened when Creon relented and decided to release Antigone.
The device of having Eurydice talk with a messenger about the events lets Sophocles inform the audience of the suicides of Antigone and Haemon without presenting the acts on stage. This follows a convention in the genre of Greek tragedy that death and violence normally occur offstage and are reported after the fact rather than being portrayed directly.
Eurydice is very upset by the news and leaves the stage. We find out later that she has committed suicide. Again, the audience does not see the suicide enacted but hears of it via a messenger.
Eurydice is essential to the plot of the play although it would be possible to stage the play without her actually appearing on stage at all.
Eurydice's role in the play is...
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