Doom Slingers were forced to travel to visit River at the old Eckerman Mill, but why was she there? She said she'd inadvertently destroyed the delerium chunk when removing it from meteoric iron, but ..... she also heard the party tell the story of opening an arcane door in when the party fought kobolds and Sten Dream Thief's Journal - Part 2
She said only that they were "working on an urgent project."
As a member of the Amethyst Academy, her motivations are suspect.