Is it considered slander and a false accusation to direct the question "So, where do you sleep?" or "So, whom do you sleep with?" to an engaged woman who is going to a resort with her fiancé, his mother, and his little sister, after it has been indicated that this is not permissible because it is merely an engagement contract?

What was mentioned does not constitute slandering the woman [qadhf]; because qadhf is accusing someone of zina (unlawful sexual intercourse) explicitly, or implicitly, or suggestively with an indication. This man is her legal husband, so his intimacy with her is permissible and not zina. It is permissible for her to travel with him because he is not a stranger to her. Customs and traditions should be observed as long as they do not contradict the Sharia.