An inconsistency from witness Fiona Payne who knows Kate the best out of their group of friends about leaving the apartment unsecured.
"I mean, I was a bit surprised, I mean, Kate, you were asking about what they're like as parents, and they're certainly not, erm, paranoid parents, what I would call paranoid parents, you know, but they're very, very careful parents. Erm, you know, I've got friends who are very laid back and, you know, I wouldn't be surprised, erm, for them to feel happy doing that sort of thing. But it did surprise me a bit with Kate, because I think, you know, she is, between her and Gerry, they are very different, she is very cautious, Gerry, erm, you know, is probably more sort of happy to, tut, relax and go with the flow and that sort of thing, Kate is very, very much more cautious. So, you know, I think, as I said earlier, I think that was something she wasn't quite happy with'".
http://www.mccannpjfiles.co.uk/PJ/FIONA-PAYNE-ROGATORY.htm