Milore Ienth's husband died terribly during a dragon attack. He was picked up and flung into the water, never found the body.

Now, Milore is acting like I was the one who killed him. She hopes the wilds claim me someday and she's sent several waves of hired thugs to kill me to "Teach that bastard a lesson for taking my dear husband away from me", even though I never laid a finger on him.

It's not that serious of a bug, but it is rather annoying to be greeted with "I hope you die terribly" instead of "Thanks for saving Raven Rock!".

I had this happen with a different npc. I think it was Adelaisa Vendicci, who I took as a follower and she got killed by someone or something other than me. Her friend, Orthus Endario, at the East Empire Company in Windhelm wasn't too happy with me after that. He would say in one breath "I can't thank you enough for your help" and in the next he would say "Something you need, you miserable wretch?" The only way to really prevent (or solve) this is to reload a previous save before the incident (death) happened.