Kaylee Goncalves’ older sister, Alivea Stevenson, scorched Idaho student murderer Bryan Kohberger as he looked on wearing shackles and an emotionless face in court Wednesday morning.

The killer barely moved, not even when Stevenson told him to “sit up straight when I talk to you.” She pressed on, taunting him with words the defense tried to have blocked from mention in the capital trial that his plea deal got him out of – calling him “Sociopath, psychopath, murderer.”

“The truth is you’re as dumb as they come. Stupid, clumsy, slow, sloppy, weak, dirty. Let me be very clear. Don’t ever try to convince yourself you mattered just because someone finally said your name out loud. I see through you. You want the truth? Here’s the one you’ll hate the most. If you hadn’t attacked them in their sleep in the middle of the night, like a pedophile, Kaylee would have kicked your f—— a–.”

Supporters in the gallery applauded when Stevenson stepped away from the mic. The court called a recess a few minutes later, after her mother also delivered a statement.

During the break, Brett Payne, one of the lead detectives on the case, gave Stevenson a supportive pat on the shoulder.

Fox News’ Julia Bonavita contributed to this report.