The group has finished the Glassworks, went to the Catacombs, fought the quasit and returned to town.
Tsuto escaped and they rescued Ameiko.
I must have missed something, because I can't find the connection of how to get them to Thistletop now that they are back. They didn't explore all of the Catacombs, but was there some clue as to how urgent getting to Thistletop would be?
They have the diary from Tsuto that talks about Thistletop and an impending attack, but the only two mentions of Thistletop are "Thistletop Goblins" and how Nualia used the "Thistletop shrine" to begin her transformation.
How did you all guide your players to Thistletop?