Agreed, if my dates were wrong someone please say so.
https://www.theguardian.com/media/2015/mar/20/sky-news-mccann-brenda-leyland"Sky News offers condolences to family of Brenda Leyland, who was found dead in a Leicester hotel two days after channel broadcast footage of her"
So it is possible they held the footage for a while.
"On
30 September she was approached by Brunt and a cameraman outside her village home in Burton Overy, Leicestershire, after the journalist was given a dossier containing details of people allegedly posting abusive tweets about Kate and Gerry McCann, whose daughter Madeleine disappeared in Portugal in 2007. Leyland had posted or reposted more than 400 tweets about the McCanns, the inquest heard.
"Leyland was found dead in a hotel room in Leicester on 4 October last year, two days after Brunt’s report aired on Sky."
So the report seems to have been delayed for 2 days before it was aired.