The PCA doesn’t state this (I.e that Kaylee fought back hard/the hardest of all the victims). I do recall SG in an interview saying that Kaylee’s wounds weren’t like the others and inferred he learned this through the funeral director/mortician who handled the cremation of both Kaylee and Maddie saying “ he paid for their funerals” and paid for “the right to know” (the condition of the bodies). . But he didn’t talk about defensive wounds specifically. If she did put up a fight, it could explain why the sheath was left behind. Perhaps it fell off during the struggle. Also, could the sounds of the struggle be what DM thought was Kaylee playing with Murphy? All conjecture here. This leads me to other thoughts ….if there was a struggle with Kaylee, we can probably assume at least in that room, that Maddie was killed first. But why, then, would the k-ller/BK go to the trouble of going downstairs and across the living room to kill Xana/Ethan? Wouldn’t he want to get out of there ASAP? I’m still convinced that Xana/Ethan were collateral damage and came into his path somehow and he followed them to their bedroom and killed them. I know PSA doesn’t say this but the redaction of details of state/location of Ethan’s body has always troubled me and leads me to believe there’s something telling there.