I had no magic spells to disintegrate the weapon but I thought I could disarm Umbra with my H2H block... So I start fighting like on a Ring! I used paralyze to give me a break to heal me and absorb fatigue. I punched her a few times but mostly I was blocking to try to disarm her. So for hours we were fighting. I tried not to kill her as I wanted her to live, like Acadian did it. It's true that its the blade that made her so evil.
I never died as I was well prepared in healing spells and potions. I was starting to get tired and thought I would never do it. But: suddenly she attacked me with her fists. So I paralized her and searched on the foor her blade. Nope. I remembered what Acadian said and on Sneak mode I took her sword. Then ran outside.
Now I have (even if I will never use it): Umbra's sword with a broken and stolen flag - Conditions 0 7 0.
You see that everything is possible in that wonderful game! And without cheating :wink_smile:
Of course I'm at level 32 and have a few enchanted pieces of clothes with fortify health and fortify magicka from Sigil stones. Thank you Acadian for this wonderful experience :foodndrink: