Sarah Milgrim was known for bringing people together, at college, at temple and at the embassy where she worked.

At a synagogue overflowing with mourners and with hundreds watching online, those who eulogized her on Tuesday in Overland Park, Kan. — days after she was killed outside a Jewish museum in Washington — found many ways to describe Ms. Milgrim as a bridge between people.

“Sarah was a link, a powerful, radiant link,” Rabbi Stephanie Kramer told the crowd as she stood near the casket covered by an Israeli flag. “Through her, her family and friends felt more deeply connected to Israel, to Jewish life, and to each other.”

Mourners on Tuesday recalled moments from Ms. Milgrim’s childhood. She loved horseback riding and caring for animals, once using oven mitts to save a baby bunny. A rabbi who had known her since she was a young girl recalled her as a steadfast member of the Jewish community through high school and then at the University of Kansas. And her supervisor at the Israeli embassy praised her for serving as a liaison to progressive groups “with a natural brilliance and boldness.”

A gunman killed Ms. Milgrim, 26, and her boyfriend, Yaron Lischinsky, 30, last week as they left an event focused on improving the delivery of humanitarian aid to the Middle East. The suspect claimed that he “did it for Gaza,” according to an F.B.I. affidavit filed in federal court.