Little White Truths

Lately we have been studying the story of Esther and a question came up. Did Esther lie? Mordecai told her to not let anyone know that she was a Jew, but did she lie about it? If someone asked her if she was a Jew did she avoid the question? Or did she just do a great job of convincing everyone that she wasn’t Jewish. Is that lying? Is deliberately leading someone to believe something that is not true, even if you don’t say anything, a lie?