The part of my experience that seemed relevant to the article:

areas of the brain involved in social interactions used for attributing thoughts and feelings to other people - known as "theory-of-mind" tasks

...was that I noticed she wouldn't differentiate between whether something had actually happened or not. For example, she could get quite angry at someone for something they didn't do, just thinking they "might" do it.

Then again, maybe this personality aspect had been there all along and I had never noticed until the additional stress of having a new baby.

EDIT: Please don't downvote me for answering a question.