BBM, your judgement, not at all everyone's. the reason LE would even bring up the fact that someone attested to seeing her was to alert the press that they are not leaning to suspect the initial story. I find it extremely unlikely that they would describe what Mom told them in the words used in the quote.
As far as my believing "unsubstantiated stuff", oh, please. I tend to believe what LE says in a press conference over what is posted on a message board. I actually listened to that press conference, and It was after the initial confusion of the original scanner details...
So, sorry, but you have not yet provided any evidence as of yet that there was not a witness as stated by LE. I wish you would, as I am open minded, but I do rely on facts, not personal judgement.