Samantha Josephson's Cause Of Death Revealed; Chilling New Video

Just days before New Jersey native Marci Josephson will bury her daughter, Samantha, she had just one question for the alleged killer:

"Does he even know her name?"

Marci then let anyone who could hear that she and her family are grieving, they're stunned, they're shocked and they're terribly angry that anyone could kill somebody they affectionately called "sweet pea."

The Clarendon County, SC coroner determined Monday that Samantha was stabbed to death, saying she had "multiple sharp force injuries" when her body was found on Friday.

The violence happened after she mistakenly entered a black car early Friday that she thought was her Uber ride.

Instead, police say, it was driven by her killer. A chilling video also shows when Samantha Josephson entered the car:

Over the weekend, the family was letting people know that they're not through, that they will work to honor Samantha's memory since the 21-year-old University of South Carolina student, unlike the alleged killer, had "purpose in her life."

"My daughter's name is Samantha Josephson," Marci said during an emotional bond hearing on Saturday, according to a recording from WIS News in Columbia, SC. "Don't ever forget her name."

The alleged killer, Nathaniel David Rowland, 25, wasn't there to hear it. He had the option to not attend the jail hearing on Sunday, more than 24 hours after he was arrested and charged with kidnapping and killing Samantha.

And it was two days after Samantha got into the wrong car – allegedly Rowland's vehicle – that she mistakenly thought was her Uber ride. Samantha went missing for hours before she was found more than 60 miles away, in Clarendon County, about 40 feet off a dirt road, police said.

Read more: The Wrong Car: Shocking Details Of Samantha Josephson's Alleged Murder

But the family was there in Columbia, anyway, and they also attended a vigil at USC later, letting anyone who listened know that they weren't going to let what happened to Samantha happen to anybody else.

"We thought we would be here to see his evil face," Marci said in the WIS recording.

They also wanted to let people know who Samantha was, a "bubbly, loving, kind" woman who was "full of life, a University of South Carolina senior who "had a plan. She worked hard, was graduating college in may and starting law school in September."

"Unlike him, Samantha valued human life and could never harm another soul," Marci said in the WIS audio tape. Here is the recording of Marci as she spoke at the hearing; the story continues below the video:

The Robbinsville family did it as they also planned a funeral that will be held on Wednesday at 12 p.m., with services at Congregation Beth Chaim at 329 Village Rd. East in Princeton Junction.

The burial will follow at Perrineville Cemetery, 755 Perrineville Rd., in Perrineville. After the burial, the Josephson family will sit Shiva, then visiting hours will be on Thursday after 3 p.m. and Sunday starting at 12 p.m. at the family's house.

A GoFundMe page was set up to raise money for the family, and nearly $50,000 was collected.

Born in Princeton, Samantha graduated from Robbinsville High School in 2015. Kathie Foster, superintendent of the Robbinsville School District, released a statement, saying: "Our hearts are heavy with grief and shock as we process the news of the sudden and tragic death of Samantha Josephson."

"On behalf of the Robbinsville Board of Education and entire school community, we want to extend our deepest sympathy and love to the Josephson family," Foster said. "Sami, a 2015 Robbinsville High School graduate, was a vibrant young woman with an infectious smile and a contagious laugh.

"Robbinsville is a strong, close-knit community and we will continue to find ways to care for and support our students, families, friends, staff, and community members as we hold the Josephson family in our hearts."

On the GoFundMe page, fellow Robbinsville classmates and friends expressed their shock. One person noted she tutored her in Math and Samantha had babysat her twins.

"She was such a sweet and caring girl," the person wrote. "I am completely devastated and am praying for her family."

Robbinsvile officials also took time out to salute the family, noting that her father, Seymour, "was like a big brother" to people when they played baseball together.

As parents, Mayor Dave Fried and others said, "This is just beyond my comprehension capabilities."

At USC, Samantha was majoring in political science, according to her obituary. She would have graduated in June and planned to attend Drexel University School of Law.

During a candlelight vigil in Columbia, SC later on Sunday, friends remembered Samantha as somebody who "had a personality and a presence that lit up a room, and everyone was automatically happier" when she was there.

Samantha's father appeared at the vigil, too, telling students: "I can't tell you how painful this is."

But he also used it as an opportunity to warn students about ride-share services and to use them properly.

Indeed, Uber, which has declined to comment, has a list of safety tips that advises people: "Get in the right car. Before you get in the car, check that license plate, driver photo, and driver name all match what's listed in the app."

Seymour and his family say they're going to work to let people know about ride-share service safety, saying they don't want anything like what happened to Samantha to happen to anyone else.

"Samantha was by herself. She absolutely had no chance. None," Seymour said in the CBS3 video shown below. "The door was locked. The child safety lock was on. She had absolutely no chance in this."

"If there's somebody else in the car, she actually has a chance."

During the jail hearing, Marci said there are no words to describe "the immense pain" the alleged killer's actions have caused her family and friends.

"He's taken away a piece of our heart, soul and life. Shame on him," she said. "I cannot fathom how someone could randomly select a person, a beautful girl, and steal her life away.

"His actions were senseless vile and unacceptalbe," Marci continued. "It sickens us to think that his face was the last thing that my baby girl saw on this Earth."

Marci then implored the court to keep Rowland in jail, and that he "should never be given the right to walk free again."

"His selfish, unspeakable and violent actions created a hole in the universe, a hole in our universe, and we see the unimaginable ripple affect her world," she said in the WIS recording.