Wait my feed froze - she conclusively said the dogs led the scent to the beach?
It certainly took a really long time to get the word out. Twitter says it was posted about 2 hours ago, which would be 9 PM PST, and she went missing at 4 PM.
My FB contact says the river near where they live is currently dry. The bank is steep and it's easy to fall down, but it's dry.
The beach in question is obviously not dry - it's the pacific.
How far is the beach from where she was last seen? Would she have had to cross that busy road?