So many things don’t add up with this, I think the chances of her falling in the river and there being absolutely no evidence are extremely slim, there’d be some evidence on the muddy river bank of footprints , or a bit of evidence like a fallen off ear ring, hat , snag of material etc. The river wasn’t high at all at that point where she was walking , odds are she’d be able to climb out or shout for attention. The Police dredged all that section of the river last weekend and found nothing- they are either clutching at straws or buying time and hoping the suspect trips themselves up while they think the heat is off , hoping for a good out but after a week the hope of that seems pretty slim