Rhea still lives in my Fodlan - I cannot speak for her fate in others' Fodlans. She does know how to use the Crest Stones - and judging by how many she had in the Goddess's Tomb, she knew that before any of us arrived at the monastery. So she would have known that in your Fodlan as well. I would not be surprised if she offered Dedue such a thing without consulting Dimitri. Rhea shares Edelgard's habit of acting unilaterally and without consideration.
[Now it's Linhardt's turn to be confused.]
Why does Dimitri want vengeance on Edelgard? The war? Is he taking it personally? It doesn't have anything to do with Faerghus.
no subject