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
Amanda has the Bank Holiday forecast for the west of the Meridian region.
Amanda Houston has the Bank Holiday weekend forecast for the east of the Meridian region.
The family and girlfriend of one of the Shoreham air disaster victims, Jacob Schilt, have spoken about their terrible loss.