Because I married Mjoll the Lioness I have been stuck with the unfortunate bug of having that creep Aerin following her everywhere she goes, it's very annoying considering we recently moved into my custom built home using Hearthfire and he's in my house 24 / 7 But now I can safely say I am 100% behind the "random attacks" that happen in Skyrim because as I left my home in the morning a giant was waiting outside, I attacked the giant then ran to where Aerin was standing (uninvited in my garden) safe to say the giant destroyed Aerin and now it looks like Mjoll has returned to being a bug free wife. Just letting people know incase anyone else has the same issue with Mjoll.