(CNN) The family of a college student who was found dead hours after getting into a car she mistook for an Uber called on ride-share services to better protect customers.

Samantha L. Josephson's family made the plea on Wednesday, when her funeral was held at a New Jersey synagogue where she had her bat mitzvah.

Turkey hunters found the body of the 21-year-old University of South Carolina student in a field 14 hours after she got in a vehicle last Friday in Columbia.

"The family's message that it hopes people -- young adults for certain -- take from this senseless killing ... is that the ride-share community, Uber and Lyft, learn from this and take ownership of the fortune made by their customers," Seth Josephson, a cousin, read from a family statement outside of Congregation Beth Chaim in Princeton Junction.

"Education and laws need to be put in to place to protect people in the ride-share industry. With the millions of dollars, it earns, the Ubers and the Lyfts should be compelled to adjust its business model, better assuring its riders' safety," Seth Josephson said.

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