BLACKSBURG Va.

The mood in the basketball arena was defeated, funereal. Nikki Giovanni seemed an unlikely source of strength for a Virginia Tech campus reeling from the depravity of one of its own.

Tiny, almost elfin, her delivery blunted by the loss of a lung, Giovanni brought the crowd at the memorial service to its feet and whipped mourners into an almost evangelical fervor with her words: “We are the Hokies. We will prevail, we will prevail. We are Virginia Tech.”

Nearly two years earlier, Giovanni had stood up to Cho Seung-Hui before he drenched the campus in blood. Her comments Tuesday showed that the man who had killed 32 students and teachers had not killed the school’s spirit.

Meanwhile, new details emerged Wednesday regarding what Cho did in the two hours between the two attacks. Midway through his murderous rampage, the Virginia Tech gunman went to the post office and mailed NBC a package containing photos and videos of him brandishing guns and delivering a snarling, profanity-laced tirade about rich “brats” and their “hedonistic needs.”

Giovanni recalled Wednesday her interactions with Cho. In September 2005, Cho was enrolled in Giovanni’s introduction to creative writing class. From the beginning, he began building a wall between himself and the rest of the class.

He wore sunglasses to class and pulled his maroon knit cap down low over his forehead. When she tried to get him to participate in class discussion, his answer was silence.

“Sometimes, students try to intimidate you,” Giovanni told The Associated Press in a telephone interview Wednesday. “And I just assumed that he was trying to assert himself.”

But then female students began complaining about Cho.

About five weeks into the semester, students told Giovanni that Cho was taking photographs of their legs and knees under the desks with his cell phone. She told him to stop, but the damage was already done.

Female students refused to come to class, submitting their work by computer instead. As for Cho, he was not adding anything to the classroom atmosphere, only detracting.