I took the Smugglers quest when I arrived at Frostmoth, chose a partner (The Male) and went to the cave.

When I came to the cave My partner died and I ran as fast as I could out of there. I had no chance against their paralyze weapons at that time.

So some levels later I return back and kill all the smugglers. When I come back to the Fort and Artoria attacks me. Of course my first thought was "BUG" So I went to Elderscrolls forum and found under "Abnormalties" that it was public known but not fixed or something... I downloaded the patch to (Where it says that the problem is fixed) But she still attacks me...

So what I wonder is if there is any mod that fix this problem? Or any way to reinstall Bloodmoon and start all over?

Would be very glad If I could actually contunie with Bloodmoon.

Go back to the previous saved game. You have not progressed very far. Otherwise if you are on pc you can use a cheat or have a soothe spell made (100% calm humanoid it only costs about 400).

Also on Morrowind Summit site you can find a bug fix for this problem if you are playing on PC. There may also be one here but I have not seen it.