I'm going to ask this again. The female caregiver took a drive that morning and was observed leaning out (the car window?), so odd that the passing (oncoming?) did or didn't stop to see if she needed help.
Could she have opened her car door at a sewer grate, lowered Wm in and was throwing gloves or something into the same, just as the other driver came upon her?
Why did she stop there? What appeal or purpose did that spot hold?
Leaning out the window, looking out/calling out for Wm... that smacks to me as a presplain. What did that driver nearly catch her doing????
If we satellite that stretch of road, will we find curb, gutter and a sewer grate?
Consider: if that notable event (the driver seeing her), would she have ever included mention of that drive? (She certainly didn't, for the emergency operator.)
Why?
I fear the answer.
I fear it and I think it explains why we're still here today. It's why Wm is missing.
JMO