Mai Pederson and the knife

There is a fascinating article by Sharon Churcher who interviews Dr Kelly's friend Mai Pederson: http://www.dailymail.co.uk/news/article-1050919/David-Kellys-closest-female-confidante-COULDNT-killed-himself.html  For the purpose of this post I'll just look at what Ms Pederson said about the knife, or at least a knife:

Ms Pederson said she believed she was familiar with the knife Dr Kelly is said to have used. 

‘He always wore a Barbour jacket and he kept a knife in his pocket,’ she said. ‘It had a folding blade and I remember him telling me he couldn’t sharpen it because his right hand didn’t have the strength to hold a sharpener. 

The date of the article is 31 August 2008.

Make of this what you will but seemingly Ms Pederson is contradicting the evidence given by Mrs Kelly that the knife was normally kept in a draw.