Answer:
She is unaware that Josh can hear what she says about him.
Step-by-step explanation:
Dramatic irony is used to show that the audience knows more than the character on stage. A character does or says something of greater importance than he or she knows. The audience, however, understands the meaning and importance of the act or speech. In this play, the audience can see Josh overhearing Tara's words, but she is unaware of Josh's presence.