Colleagues wore their white medical coats to honor 23-year-old Madison Cornwell and 24-year-old Anne Baldock during their private memorial.
Ahead of the vigil, Cornwell's younger brother and sister choked back tears as they described the second-year medical student and her many accomplishments, including working with malnourished children in Malawi, Africa.
"I cannot believe she has been taken from us so early in life. But in the 23 years she lived, she has done more with her life than most people could dream of," Grayson Cornwell said.
Cornwell and Baldock were killed after they collided head-on with Lance Cpl. Jason King, a 21-year-old Marine, the California Highway Patrol said. Prosecutors said Wednesday that King had been drinking with friends in Mission Valley and was driving the wrong way on the freeway at the time of the fatal crash.
Three other passengers, also UCSD medical students, were in the car with Cornwell and Baldock and were sent to a hospital with major injuries. One was still in critical condition Wednesday night.
King, was also rushed to a hospital. Wednesday, he was charged in his hospital room with murder, gross vehicular manslaughter and driving under the influence of alcohol.
The Cornwells hope the tragic crash will make people think twice before drinking and driving .
"Madison wanted to help the world, and I hope her memory can encourage us to live like she did, to give like she did, and to love one another like she did," Cornwell said.