Asked whether the family was also in touch with the French government to secure her release, the mother said they are asking everyone to do what they can.
In a briefing earlier on Tuesday, an Israeli military spokesperson described the Hamas video of Mia Schem as "psychological terror against Israeli citizens."
The 21-year-old was among the scores of hostages captured from Israel by Hamas militants on October 7, during the deadliest Palestinian militant attack in Israeli history.
Israel has responded with a massive bombardment of Gaza that has killed more than two thousand Palestinians and injured over ten thousand, according to the Hamas government office.
