Me too.
Maybe she just had a good day out. Shops, restaurant, secret lover, who knows? With me, but not owning a dog, I went for a long walk on the South Downs and got a meal in town about 12 miles away, had another walk along a river, had a few pints in a 16th century pub and got the train back. Told the money grabbing evil witch lady I went for a walk along the seafront.
Getting back to the road ghosts. There's a 7 or 8 mile section of the A23, the road that goes from Brighton to London, 60 miles away, that is dual carriage way and 2 lanes each side before going into 3 lanes. The dual carriage way part has no lighting and is tree lined all the way both sides. That bit is all countryside. (Bolney to Pyecombe). A few times over the years during the evening when dark, or during the night, the police have temporarily shut the road after reports of someone walking along in the road. They didn't find evidence of such. Road re opened. It was reported in the local paper, the Evening Argus ( a once good newspaper turned crap).
On a cloudy night it is really dark along that section of road and after about 8pm there is not that much traffic. Once, years ago, I was coming back to Brighton when suddenly in the headlights I saw a person walking along the very narrow grass verge between the road and the trees. As I was doing 70mph there's not really enough reaction time to give a properly wide berth and driving a largish transit I was not going to do any sudden jerky yank of the steering wheel. I was past the person in seconds. I just thought to myself what a f*cking dickhead to be walking in the dark along that stretch of road at 11pm but people do such imbecilic things sometimes. Afterwards, upon reaching civilisation, I never thought to call the police.
Did I maybe see a road ghost? Dunno. The person seemed 'solid' enough. It looked male in darkish clothing and in no hurry. Then there's the reports in local rag? Maybe they're all the same (living) person who for whatever reason walks that section of road. Maybe not though. I once had a flat tyre when driving along a motorway and changing the tyre on the hard shoulder was scary enough as when driving on a motorway you don't realise what it's like to have vehicles going past you at 60 or 70mph but on road road where the distance between the person and the vehicles is literally just a few feet? And then not to react to that and just carry on walking normally?