Honestly both my husband and I go for long drives sometimes together, sometimes alone when we need to clear our head. With her husband being home alot(I am assuming here, if he is on leave or working through his PTSD) I'd imagine they spend a lot of time at the house together. And from what I know of her friends(know a few of them) and others involved in the same groups, introverted/solitude loving is not remotely odd, and is a likely possibility imo.
I spend a lot of time at home, only working part time. It's not relaxing to me, i need air, and space, and sometimes just nothingness(ie. the drive) to soothe me. And that specific drive, which I drove tonight in fact, is always a soothing one for me.
The mall is quite large and stretches from one transit station to another(both having bus stations, but only one having an O-Train stop)
Also wanted to add that I drove through Winchester to Ottawa twice today(only on the main Hwy 31, though as I was rushing to get somewhere) and only passed minimal police, and no numbers that were out of the ordinary. However if it's true that they are on side roads, it would make sense that I wouldn't see them.
I have to say in a really awful way, I pray this is something personal, simply because it terrifies if this was someone "back home". For me there are a few scenarios some more likely than others, none involiving specific people though.
I have a hard time with it being someone from there, ie. friend/family,etc. simply because anyone from the area knows many many many places to hide a body that won't be found other than driving to the South Keys mall, with its traffic cameras, and security. It's just crazy to me, that someone from the country would not dispose of her body there, honestly, as gruesome as that is. And also where/how would someone get back from there.
The only plausible scenario I see there is someone who was an acquaintance or something similar asked if she could drive them back to the city. <--- though that seems unlikely.
Stranger/random/"witness" killing at S. Keys by someone in the area, stands out as likely in my head, even though I know it's probably not the most likely scenario.