The problem with the quest line of Sebille (Divinity: Original Sin 2)

Hi) the Essence is this: Sebilla killed Zalokosta, I found oranges Griff, send them to him, and not let Sebillo on a conversation with him, because he was afraid that she will kill him too) In the end, he talked to him and said that the thief already dead, but Zalokosta was not given. As a result, now in dialogue with the Griff I have no possibilities to continue the line of Sebille, although the magazine says that she needs to talk to him, and during conversation with her she tells me that she wants to talk to him, before attempting to escape. What to do, tell me! Here is the proof: