This is crazy! This was one of my first thoughts in the very beginning of the case. Seeing as Kaylee's sister called her a Sleuth. I thought maybe she had bad vibes about a boyfriend of a friend or roommate, or maybe helped a friend/roommate through a break up (how many times have women convinced other women to have the strength to leave an abusive relationship?), said girlfriend leaves, and then the boyfriend went on a rampage. The girls all seemed really close where I could totally see them (in my mind), supporting a friend in need. So kind of random that one of my first feelings was actually a true event in another case. But at this point, I thought that would have already been worked through so seems a little deeper.
All just my opinions/thoughts