So at least 2 GNR officers were wrong then - when they claimed that the shutters were partially raised?
Can you can come up with a credible reason why Amy Tierney would decide to perjure herself to the PJ?
The GNR Officers, when asked in October 2007, said;
When questioned about the windows in the bedroom, he only remembers that the window in the girl's bedroom was closed with the blind raised up the space of the width of a hand.
When questioned about the bedroom windows, he only remembers that blinds of the window of the girl’s bedroom were not totally closed.
http://www.mccannfiles.com/id258.htmlThat fits with the photographs of the window taken on the night in question. Amy just said the blind (shutter) was raised, not partially raised.
Perhaps she did see the blind raised and the window partly open, but the other two women didn't, and they were there before she was according to the statements.
Pointing out discrepancies between statements doesn't equate to accusing people of lying. If anyone did lie, the reason would be known only to themselves. Perjury, by the way, involves lying under oath. Was anyone under oath when giving statements?