A Sister Who Makes a Real Difference Siena (Sisi) Kleiner-Fisman is an important part of Benji and Giulietta’s lives. She’s not only their sister but also a consistent support and teammate in many of the things they do. Sisi takes part in their learning, helps them during different activities, and contributes to their growth in a practical, hands-on way. Her commitment to inclusion shows in her actions, and she often encourages the people around her to think more inclusively