Good god are people on here stalking her fb then?
Ultimately the police know more than they are letting on. If they’re saying they don’t believe there to be a third party involved they have good reason for saying so. Either because they have good reason for believing otherwise or because they do think there is a third party involved, suspect who it might be, and are biding their time.
And the parents talking to the tabloids could well jeopardise any enquiry in that direction.
There is definitely more to this. The police wouldn’t have come out so soon and be continuing the enquiry for so long if there wasn’t. Yes they may have come out to look for someone having fallen into the river, but that search wouldn’t still be continuing on such a mass scale at this point if a body hadn’t been found yet.
As for talk of the dog being distressed etc, unless that has come from an official police source I wouldn’t pay any attention to anything that is written in the tabloids, who love nothing more than a juicy story to speculate on.