Wow, I haven't caught up on all the reading here, but I'm just astounded by some of the comments.
There are many things that can be inferred from the affadavit.
XK received a door dash at 4 am. At 4:04 am, BK was entering the area for a fourth time, driving eastbound, turning around, driving westbound, and struggling to park. So, I imagine he took at least a couple more minutes to get into the house--say 4:05 or 4:06? Likely not much longer because he was leaving the neighborhood by 4:20. So, this entire event took place in approximately 15 mintues.
Which leads to this:
1-According to DM, around 4 am she "awoken" by what she thought was KG playing with her dog upstairs on the third floor.
Speculation: I speculate the time to be between 4:05 and 4:15, probably right around 4:10. The perp was in the house causing commotion on the third floor, which woke DM, whose room (we now know) was directly below MM's. MM, IMO, was the first killed. This also makes sense since the sheath was found next to her.
2- A short time after (we can infer within minutes), she heard who she thought was KG say "there's someone here." This prompted DM to get up and look out the door, seeing nothing.
Speculation: The person saying "there's someone here" was likely NOT EC, because I don't think DM would confuse EC and KG. It could've been KG who may have responded to the commotion in MM's room, or maybe even XM who got off her TikTok and left her food in response to the commotion. I am going to go with KG, because I'm quite sure DM is very familiar with KG's voice. Maybe KG didn't fall asleep in MM's room, maybe she was drawn in there from the commotion.
3- DM then opened her room for a second time when she heard what she thought was crying coming from XK's room. A man says "it's okay, I'm going to help you." Likely at or within a minute of 4:17, the same time as the camera (which was less than fifty feet from XK's room) picked up the whimpering, a thud, and dog (Murphy) barking. At this time she sees the perp, dressed in all black, with a mask on walking TOWARDS HER and then towards the door.
Speculation: So now he's on the second floor and presumably both victims upstairs have been attacked. DM was likely peering through the door; he didn't see her. But given her stance as "frozen shock phase," the crying, the thud, the dog barking, the commotion---there is no way she thought what was going on was innocuous---like a food delivery or a friend. She likely didn't know what was going on, but she wasn't "frozen [in] shock" out of anything but fear. She was likely traumatized and didn't know how to respond--but it's absurd to think she just dismissed it and went back to bed as some people are speculating. Seems EC and XK were the final victims, and I'm leaning towards XM being the one whimpering knowing what awaited her as the final victim.
4-Perp is on his way out of the neighborhood by 4:20.