On 10 December 1943, at the age of thirteen, together with her father, Segre tried to flee to Switzerland, but both were rejected by the Swiss authorities.
1943年12月10日，莉莉安娜13歲時，她的父親嘗試帶著她以及兩位堂兄一起逃往瑞士，但瑞士當局拒絕接收她們。