After getting the Sealed Fate quest, I found and opened the satchel. Discovering the details of what's to happen I tried to talk to Avetta about it but all she would say to me was "Stop him!" (Screenshot 1). Haven't talked to her before that moment.
Tried talking to Degnos and tell him "[Leave] I'm not interested in your explanations" and the captain would still not talk to me.
Since she asked me to stop him I tried killing Degnos but Avetta still kept saying "Stop him!"
After talking to Degnos and choosing either solution (give items back/forget the plan), Avetta begins responding again saying our business is resolved (screenshot 3).
Screenshot 2 shows the quest log in case it's useful.
Edited by Teacher, 11 May 2018 - 03:33 PM.