Daria Cruz is the sister of Tania Cruz, who supported herself with survival sex while she was mostly away from her family. Daria was distraught hearing Tania scream and cry over the phone, saying she'd been raped and hearing the captor that raped her taunt the both of them before cutting the call off. Daria rushed into Special Victims, elaborating her plight and her sister's history.
Connecting numerous other women's disappearance led the team to realize a serial killer was trying to target all high-risk women. The killer's hideout was soon after tracked, where Tanya was found freshly raped, tortured, murdered, and mutilated, her remains under mummification. Because of the condition of her remains, an ID from Daria was extremely difficult, even in spite of her matching DNA and dental records. Coroner Abel Truman had Daria bring a happier photo of Tanya while identifying her, reassuring her although Tanya was dead right in front of her, her own person she was is in the photo. Daria was touched, but still distressed enough to flee the morgue. (SVU: "They'd Already Disappeared")