I married Ysolda. The wedding party included Lydia, Uthgerd, Mikael, and Camilla. After the ceremony, everyone headed out of Riften's north gate, more or less together (except Camilla, who probably went out the south gate to take the southern route back to Riverwood). Now, I could have just FT'ed or taken a cart back to Whiterun, and everyone probably would have made it back safely. But I knew that even named NPCs can be killed by encounters. I'm not sure if it's the presense of the PC that causes this, and NPCs on their own travel safely, or not. Anyway, I decided to go along, to make sure my new wife made it back in one piece.
We set out with Mikael and Uthgerd in the lead, then Ysolda, then myself and Lydia, whom I'd added as a follower, to keep her close. We dispatched a troll around the first bend with little trouble. But then I realized the whole group was going to try to walk through Fort Greenwood, which I hadn't cleared of bandits yet (not really a spoiler -- all locations can be assumed to have hostile populations at first). So Lydia and I ran ahead and quickly cleared it.
Moving on, we encountered a few wolves, and I was attacked by a random Imperial (character, not soldier). Mikael and Uthgerd were a ways off ahead. Then I caught up to Uthgerd because she was standing still at a bridge. She was standing still because of the bear on the bridge who had just killed Mikael. Lydia and I took care of the bear. I didn't know what to do about Mikael, so I left him. No more "Ragnar the Red" at the Bannered Mare, thank Talos, oh I mean, how sad.
Things got a little tense as we passed near Darkwater Crossing, because of the dragon flying around in the distance. But he seemed content to fly around. More tension arose by Fort Amol. Uthgerd wisely took a shortcut through the woods, but Ysolda insisted on walking along the road, coming perilously close to triggering a hostile response from the fort's inhabitants. But because Uthgerd got ahead of us, I wasn't there to support her when she encountered a frost spider.
I didn't really like Uthgerd. She'd shot me in the back with an arrow the one time I went out with her. But she'd been an actual follower, and I didn't want to leave her there. Someone else wrote a story one time about carrying Lydia's body back home, so I followed that example and picked Uthgerd up and carried her back to Whiterun. After giving her armor to Lydia, of course. No need to let good steel plate go to waste. Fortunately I was able to keep up with Ysolda, and I only had to drop Uthgerd once to kill a bandit. No further hostile enounters, and we arrived back at Whiterun after about 24 game hours on the road.
I had a problem, though. I couldn't get Uthgerd's body through the gate -- you can't take a hand-carried item through a transition. What to do? I didn't want to just dump her somewhere. I thought if I could find a low spot in the wall I might push her over and then gather her up on the other side. I went all the way around Whiterun and found that the city has a very well-built wall. Finally I left her body outside the gate, hoping the guards would take care of it. They must have, because her coffin was in the Hall of the Dead when I visited (along with Mikael's urn). By the way, I did run over to Riverwood -- Camilla made it back too.
It was interesting along the way to see the AI's pathing routine get screwed up and then correct itself. Sometimes they made smart shortcuts, other detours were just bizarre.

