Harris' family said her boyfriend, who was in the passenger's seat, took control of the auto and steered it off of the interstate.
Harris was pronounced dead at the scene, according to NBC 4, but her boyfriend survived, managing to steer the vehicle off to the side of the road.
Authorities said that witnesses told investigators that Bankhead was driving down the state highway when she turned off and positioned the auto toward the cliff, then suddenly accelerated.
A 12-year-old boy jumped from the Cedar Lane overpass near Exit 62 (Nutley Street), landing on a 2005 Ford Escape traveling eastbound. The front-seat passenger was identified as her boyfriend.
A man in the front passenger seat of Harris' auto was not injured.
Harris was a high-achieving student, graduating summa cum laude from Towson University, where she completed her undergraduate degree, Miller said. The boy who fell off the overpass was taken to Inova Fairfax Hospital and treated for life-threatening injuries.
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Unable to find a match amongst family members, and with a donor list seven to 10 years long, she found herself at an impasse. Gomez's boyfriend, The Weekend, was rumored to have been by her side throughout her recovery in hospital.
As an undergraduate, Harris attended Towson University.
"She was fearless; she was absolutely fearless", he said, according to the Washington Post.
"Every student contributes immeasurably to the community we create together at Marymount University". So she got to know her classmates very well.
Harris' father Patrick Harris described his daughter as an outgoing person, who had a love for the outdoors.
Her friends and family say the irony is she wanted to help children just like the boy who attempted suicide. "I miss her so much".