"I had one shot at it, and I was going to make the most of it," Alivea said of the powerful victim impact statement she delivered

Alivea Goncalves, sister of Kaylee Goncalves, has addressed her searing courtroom statement against convicted Idaho killer Bryan Kohberger.

"I was fueled by seeing the rage on his face," she told ABC News. "Man ... was he mad. That was obviously a big point of why I did what I did -- to make him feel small."