I finished the tea party quest, talked to that priestess long long ago yet I can't start the fina letter quest, talking to her in her house does nothing
also how do i get to the bandits wasteland
Do you mean "The matter of Order" quest ?
If yes, be sure:
- that the quest is not already started, in case you've accidentally started it in the past (look into your quests log)
- that Eric is equipped with the "Mighty sword" or with the "Marvelous sword" (you can check it when hunting with him), given by the mysterious priestess
- that "Melissa's lectures" is high enough ( >= 10 - This one is a bit more complicated to check). Which means usually that you've done all the possible parts of the Tea party with the 2 elf sorceresses
- that it's the morning (i.e. when you talk to Fina in her house in order to help her).
The bandits wasteland is west of the "Rocks" map with the busty snakes and Kaaren (i.e. north of the "Ruined passage").