If I remember correctly this was initially revealed by Scroobal (or another one of the forumers here) when LWL started the ball rolling on this...so it is likely he just posted from whatever he got here....
For correct attribution, the article was by Papsmearer made in October last year in his post entitled "Cause of the rift between LWL, LHY and LHL".
Cause of the rift between LWL, LHY and LHL
"A little bird told me this is the reason for the rift between the sister Lee Wei Ling on the one hand and Lee Hsien Loong and wife Ho Ching on the other hand.
After Old man died in March 2015, it was discovered that he had brought back many govt papers, some of which were potentially of a sensitive nature, and as well, among his private papers were matters relating to his assets in relation to his estates. Because no one could trusted to go through all the paper work and documents other then a family member, it was decided at the funeral that Ho Ching would take a 3 month sabbatical to go through all of it. Wei Ling was too busy with her practice and Hsien Yang was not too interested, so it came down to Ho Ching. That is why Ho Ching's sabbatical started in April 2015.
During the search of Old Man's documents, Ho Ching discovered the transcripts of Old Man's interviews and without consulting anyone assumed that they were state documents, among the many other state documents that were at the house. She handed the transcripts over to the cabinet secretary Tan Kee Yong, as his office is also located in the PMO. And he was some one she was familiar with as she sees him where ever she goes to the PMO. The transcripts were then turn over to the govt's care by Mr Tan and so she thought that was the end of it. It was only later when she mentioned that she had turned in the transcripts, that she was informed by Lee Wei Ling that those transcripts were the property of the Estate and not the govt. Ho Ching had a different opinion (which I agree with), and that is that since those interviews were made in LKY's capacity as PM, they cannot belong to him privately and has to belong to the state. While serving as Prime Minister, anything he says formally as in the interviews, should and has to be on public record. Nothing that a govt official puts into an official transcript can belong to that govt official.
As such, Ho Ching refused to retrieve the transcripts from Tan Kee Yong, and in fact on principal, it was determined by her that they were state property. As a result, LHL was put in a hard position. His sister wanted him to order the transcripts returned to the estate. But his wife told him that they belong to the state and hence, should not be returned. What was he supposed to do, caught between a rock and a hard place? In the end, he had no choice but to side with the wife or face matrimonial discord.
As a result, Lee Wei Ling, who had by this time pressured a reluctant LHY to back her up, launched the lawsuit against the state to get the transcripts back. The unnamed family member in the lawsuit that turn over the transcripts is Ho Ching. Of course, the judge already knew how it was going to play out and denied their legal action. Hence, the war of words erupted between LWL and Ho Ching and LHY. You have the monkey with the middle finger instagram by Madam Ho, and remarks such as "dishonourable son" by LWL. I think the rift is possibly irreparable now between LWL and LHL/Ho Ching.
Just my 2 cents. Please see next post for actual article."