Inspector Bob Jacobs said: "I understand that Sara can be easily confused and her family are understandably concerned that she may come to some harm.
“I believe that it’s likely that Sara is still in the Beaminster area. She is reasonably fit for her age and she has been known to walk considerable distances.”
More top news
Tuesday morning's forecast for the east of the region
Tuesday morning's forecast for the west of the region
Hundreds of sailors compete in Ramsgate's regatta, at the start of Ramsgate Week