On the way home, it might make more sense to just direct hop from Glen Allen to Burlington in her P85. That would bring her right past South Hill.
I've done this... 5x now? Pretty easy in the nice weather. I didn't even bother to watch my range at all the last couple of times (after almost max charge... maybe 97%). Comes in pretty close in the cold, but doable with a range charge (South Hill will help in the cold).