What does Esther 4:13 mean?

Mordecai sent this reply: 'Don't think you'll escape in the palace just because you're Jewish. If you stay silent now, help will come for the Jews from somewhere else, but you and your family will be lost. Who knows? Maybe you became queen for just this moment.' Esther 4:13 - Modern Text Bible

(Mordecai challenged Esther, saying her position wouldn't protect her, and maybe she was meant to act now.)