Nikki was last seen by her housemates early on the morning of June 6, 2019 after telling them she was going out to meet a man she had met. She told her housemates this person was going to give her a ride to retrieve her phone from someone's house. This is the last anyone has heard from her. (Information retrieved from NamUs.gov)

Update: The body of 17-year-old Nikki Kuhnhausen was located December 7, 2019 in east Clark County off a logging road on Larch Mountain when a citizen located a human skull. Detectives later recovered more bones, as well as clothing and jewelry in the area, scattered across the rugged landscape by animals. David Bogdanov was convicted of killing Nikki after a jury found him guilty of second-degree murder and malicious harassment, which is a hate crime under Washington law, in August 2021. He was sentenced to 20 years in prison on September 9, 2021.