When was the last time that NB was positively identified without doubt? I'm guessing it was by her children when dropped off at school.
The police are saying she didn't leave the field on foot, they were certain the river was her route out.
The search team are now saying she isn't in the river.
What if she never reached the field in the first place and the sightings were of someone else walking her dog and in her clothing?
What if she was abducted between leaving the car at the school and getting to the bench?
What if her coat was removed, the dog and phone were taken and she was taken elsewhere?
A decoy was then leading the dog to the field, used the phone to send a message and email, the calendar on the phone coincidentally flags up the teams call which the decoy joins as a bonus alibi, albeit muted without video and eventually leaves the lead and harness on the bench, eventually drops the phone mid call for someone else to find and then leaves the field by some other means, possibly across the fence in the upper field to Rowanwater where the reported last sighting of NB was which itself could have been a lie or reported by the decoy themselves! It seems that the clothing originally reported was incorrect anyway - ankle length gillet which in fact was a knee length coat.
So many questions!