Maybe you have to update your game version. There was a bug with this quest a while ago, but I don't remember which exact version it was in.
You need to repair the Bitterroot Farm, the events of Elina and Louise must be advanced so that Elina is standing in the noble living quarters, the border to Dorgania needs to be open, you need to know the location of Ebron, the tribe elves need to be gone from Orchel, the stroage on the overview map needs to be build, the events with Zentha about alchemy need to be done, Seldanna must've repaired Mirel's old bow, and the quest about racism with Mirel must be done.
If neither of these things help, send your save file to Naughty-Netherpunch@web.de and I'll take a look at it. You can find the saves in the www/save folder (unless you're on android). I only need one file with the save slot number in which you have the issue.