I can't bear to watch any of the vigil, reading about it here is breaking my heart into pieces. It feels as though we've come to know these four people and their families, even though of course we haven't, but they're so much more than all of the headlines and the attention. It feels so easy to imagine who they were as people, full of life. This whole thing is so devastating.
I think with what Kaylee's Dad has now shared, which has me in tears, a picture is starting to form to me, just MOO, that seems logical. If the killer was targeting E or X, I don't think he/she would have gone up to the 3rd floor, and if K and M were in bed, then it doesn't appear either of them got up to investigate any noises. It makes sense that K or M were the intended target and the first victims, and if they were in the same bed perhaps one woke up when the other was being attacked (how unthinkably horrible and terrifying) and did make some noise in alarm. The girls on the 1st floor would likely not have heard anything all the way up on the 3rd, but E and X very well could have done. The theory many people have of one of them getting out of bed and running into the killer who was maybe going downstairs to leave at that point adds up - the killer attacked them, waking up the person still in bed or going into the room to check if there was anyone else there who could be a witness, and attacking them too.
Horrifyingly, it's making me wonder if maybe they intended to kill one person only, and didn't bank on finding K and M in the same bed, or being intercepted by anyone else. It would also explain leaving the first floor girls unharmed - if they didn't see anything and weren't in the killer's path, then they were of no interest to him/her. If the intention was to kill one sole target, then whoever did this has to be panicking now at how out of hand it got and how much attention this is garnering. It would also lead me to think that if it was planned, but for one person rather than four, then evidence being left at the scene in the chaos seems likely. I really hope so anyway.
All very much MOO.