Why do you think that's a picture he posed for? She probably got it from one of the family members she spoke to.
Is there a print-version of this article? That would show the photo credit in the margin. Too bad photo credits don't seem to be the custom on the web.
"Satoshi Nakamoto in Lancaster, Calif. Credit: Photo via Photobucket.com via Satoshi Nakamoto (Wagumabher)"
Sounds more like she uncovered his personal photobucket and took an image.