I'm somewhere in Act III. I already reforged the Sword of Gith and killed the Shadow Reaver who comes after that. Then I left West Harbor and completed a few more quests. Then I remembered I didnt loot the Reaver's body, so I returned to the Arvhan Ruins place, and went through the portal, killed the few remaining blade golems and shadows and got my treasure. When I tried to return through the song portal in the swamp ruins, I couldnt, apparently because I dont have Zhjaeve in my party (I was able to use the one in Arvahn). I did a quick save after killing the reaver, and my previous save is a couple of hours earlier, which includes a lot of stuff, including getting Light of Heaven.
So, my question