Kaylee didn't live there anymore. She wouldn't have sheets on the bed in the bedroom that she formerly rented.
If not in Maddie's room, where would Kaylee sleep? Didn't we read that (per her family) her things were covered in blood, meaning that her travel bag was in Maddie's room?
If not Xana who put the food packaging from her 4 AM food order in the kitchen, then who? Certainly not the murderer. If the food packaging in the kitchen was not from that night, then Xana heard noise from Maddie and Kaylee when she was in her bedroom. She left her bedroom and walked to the stairs next to the kitchen. She called out. Kohberger went after her.
The scale model easily illustrates where everyone was at the time of the murders. Xana was outside of her bedroom when Kohberger discovered that she was awake.
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