More likely the photo selection is limited to what family members or friends with photos are willing to let the press see, and willing to give to the press.
And in cases like these it is probably the defense attorneys who selected the photos.
True! That said: I doubt that the family members even have any unflattering photos - you know: Snapshots of the young kids with the mother - a murderous glint in her eye - hovering in the background, holding a butcher knife!
Regards,