Just 24 hours before she was killed, Ms. Lu learned from Mr. Weiner that she had passed a key statistics exams she needed for her master's degree.

WSJ: Chinese Pour Out Grief for Student

Just 24 hours before she was killed, Ms. Lu learned from Mr. Weiner that she had passed one of the two key statistics exams she needed for her master's degree.

WSJ: China Mourns Boston Marathon Victim

She added that Ms. Lu's parents had to tell their own parents that their grandchild had died.

WSJ: Parents of China Victim Get U.S. Visas