I just did the keep of ganleon and i died right when the black dragon was killed but the white one was still living. I teleported back and we killed the white one and i finished the dungeon and got the experience fromit and after i talked to the lady of the lake, i had to do the quest again. What should i do? I don't know why that happened and i don't know if i should do it again. thank you!
You fled after a boss was killed but before the battle ended. That means you need to complete it again. You never get credit when you flee like that because the quest isn't completed.