Only speculative info. Check the comments of the previously posted like to the Ottawa Citizen article...but take it for what it's worth.
If she was meeting someone discreetly, then you'd think she'd bring her phone for sure as she wouldn't want that person calling while it was left at home.
Seems unlikely because she forgot it.
...Unless the husband spied on her whereabouts using her phone to track her so she purposely "forgot".
Again, seems unlikely.
Then gets attacked by this person or someone else after they meet... Possible, but odds are not likely.
Until I hear why she decided to go, where she said she was going, how long she planned to go, and most importantly what she was doing before she left and why she didn't take her cell phone with her, I just have a hard time believing that she even went for a solo drive in the first place.