A 37-year-old North Las Vegas woman was found dead near a remote Interstate 15 off-ramp in the Mojave Desert last month, and investigators still don't know what killed her. Hsin-Ju Chuang was identified as the woman who died after California Highway Patrol officers responded to the southbound I-15 Fields Road off-ramp in Newberry Springs at 9:48 p.m. on Monday, August 24. The response involved entry into the vehicle during a welfare check, and the CHP's Barstow office is now investigating. The timing raises questions about environmental conditions: high temperatures in Newberry Springs and the surrounding Mojave Desert reached up to 108°F that day, with overnight temperatures still in the 80s, per weather data reviewed in the report. It remains unknown whether heat exposure, a medical emergency, mechanical failure, or something else played a role. The San Bernardino County Coroner's Office is still waiting on autopsy results to determine an official cause of death. The coroner division says death investigations requiring toxicology and histology can take an average of six months to one year to finalize. The CHP Barstow office covers 130 miles of I-15 between Apple Valley and the Nevada state line — geographically the second-largest CHP patrol area in the state — and that vast, sparsely populated territory is part of why remote incidents along the corridor can take time to reach the public. The case remains open on multiple fronts; the report cited does not include a CHP preliminary incident report, and details about Chuang's travel plans or the circumstances leading up to her death are not included.