If he/she/they were stringing out their plan to make people think she took off after the ‘break up’, then perhaps they wouldn’t want neighbours remembering lights on in the house.
IMO
I think so.
So weird that her vehicles were home & not one neighbor found it odd to not see her or her cars moved, in ten days. I would notice if my neighbor didn’t move his cars. If I didn’t see him for a few days, I would knock on his door.