According to Kim's family, she was a professor at Boston University's medical school and was on the plane with her American husband, Peter Hanson, 32, and two-year-old daughter.
The grandmother, Kim Ok-hee, said "I was so looking forward to seeing her, my granddaughter is extra special to me because I had brought her up until she was six. Both of her parents died from cancer."
Australia's Defense Minister Peter Reith said three Australians were confirmed dead, but he expected the toll to rise.
"We have little doubt that we will need to brace ourselves for more," he said.
The Mexican government's news agency Notimex reported that there were 100 to 150 Mexicans working in the World Trade Center.
At least 12, some who had worked at the restaurant Windows on the World, remain unaccounted for.
Mexico's consul in New York, Salvador Beltran, said it would take weeks to know the death toll for its citizens.
RSS