Dr Johanna Ellerup, a pharmacist, told DailyMail.com on Tuesday she has not seen her sister, Asa Ellerup, since her husband pleaded not guilty to murder charges.
Lost Girls revealed how then Suffolk County Police Commissioner Richard Dormer bungled the investigation into the deaths of sex workers on Gilgo Beach.
Mack was 24 years old when she abruptly disappeared from her family's lives around October 2000. Two decades later, DNA testing provided answers but also confirmed their worst fears.