It'll be interesting to see if Sarah's words early on are leakage with regards to where her body has been hidden. To me it sounds as if her body is in a secluded area or buried, and it will indeed have to be found, rather than merely spotted by a member of the public.
Aug 5th - "I know my baby girl
wouldn't be out in the open. She's scared of being
out in the dark alone..." "...I'm desperate for my daughter to be
found."
Peterborough: Missing girl Bernadette Walker still not home - PeterboroughMatters.co.uk
Sep 10th - "Bernadette
if you can see this, please let us know that you are safe. You can set up a new Facebook or Instagram darling and message us, that way you can let us know that you're safe without giving away
your location."
Peterborough missing girl Bernadette Walker now high risk - PeterboroughMatters.co.uk
I don't get the feeling from this that she is in water.