Board Thread:Skyrim/@comment-107.141.228.150-20150308184253/@comment-6881629-20150324141431

There was no reply in the forum i found those command suggestions so i wasn't sure if they'd work, if you spawned the note with commands maybe drop and pick it up (if you can) and make sure you read it if still nothing try resetting her ai or moving a little forward in the quest again -

setstage mq106 30

Then see if Delphine will talk you might have to add the horn to your inventory and if the Greybeards don't accept the spawned item skip a little forward in that quest too.