Watch: Bryan Kohberger Reacts to Kaylee Goncalves' Sister Saying He'll Get "Big Ds" in PrisonBryan Kohberger's family is coping with a difficult reality. The criminology student's mom Maryann Kohberger and sister Amanda Kohberger made appearances in court on July 23, when he received four consecutive life sentences for the 2022 murders of college students Kaylee Goncalves, 21, Madison Mogen, 21, Xana Kernodle, 20, and Ethan Chapin, 20.