Suggestion: Complete Fast Travel Overhaul would let you tell the carriage driver to drop you off in Shor's Stone. (He must have driven you straight through it, and Fort Greenwall.) Saves quite a lot of walking, when you're avoiding fast travel.
You'd still get to loot, sorry I mean "encounter", the fort on your way back, since CFTO annoyingly doesn't put carts in the small settlements.
Love the story, but what happened to your feline pack mule?