The NYPost is a tabloid too.  I honestly haven't heard one positive thing she has said since MJ's death.. The things I've heard or at least the comments that the media points out have been negative in my opinion.  I've heard and read comments from folks not related to MJ that was more loving and sincere than some of his own family members. 
Did you read the most recent comments by Kobe Bryant about MJ?  I just wish his own family including his sister, would talk about MJ like that. I honestly wish Janet was upset with Oprah about that interview but I just don't believe it to be true at all. If she was upset we would've heard about it from Randy, like he was upset. He didn't mention any other family members being upset about that interview, and that's very telling in my opinion.