Do you confess your share in this crime or deny it?
Here in the beginning of Scene 2 the Sentry returns with the one who buried Polynecies, while Creon is wondering how he caught the "prisoner" so fast.
In this scene Antigone and her Uncle King Creon are discussing her actions and somewhat arguing over one another's "morals".
Creon calls in Ismene to see if she had any part in the burying( she didn't), so she says yes she did help. Antigone is saying that Ismene has no right to say she helped her, Ismene just wants attention.