I can’t agree with you more much too ‘weighted ‘as SC put it once .We don't know for sure that he hung around or knocked on her front door. I do agree that locals or family members should recognise him. The problem with this case has been that, at times, there were too many conflicting pieces of evidence being presented. If a documentary or a slot on a news programme would focus on one or two strong theories and present them to the public, it might focus people's minds and stir their consciences.
But have faith !