From the DNA side of the story, I think this is the order of events.<p>In 2017 the police reopened the cold case and contacted Astrea Forensics to extract DNA from a 'partial femur'. The police sent the results to Identifinders International to search for relation matches.<p>The story names FamilyTreeDNA as the DNA data source. I assume IdInt mined FTDNA's data, found familial matches and then FTDNA returned all they could, including identities and contact info.<p>In 2020, the accused's granddaughter (Jenna) bought a FTDNA kit and submitted her DNA. A few months later, police contacted Jenna, said she was a DNA match and informed her that IdInt would be calling her.<p>After the police's call Jenna talked it over with her mom (Kara) and they wondered if it was part of a scam. When IdInt called Jenna, they apparently asked for her FTDNA login and Jenna hung up on them - suspecting it was part of a scam.<p>Police then approached Jenna's cousin who worked in the prosecutor's office. The cousin visited Kara to explain the case and solicit her cooperation. Kara then made a 'distressed call' to Jenna and asked her to come over asap.<p>Jenna came over and the case was explained. Jenna "was terrified police would think she was trying to hide something because of her refusal to speak with Gillis. She immediately called [Gillis]."<p>At this point, I assume Jenna provided her FTDNA login creds to Gillis.