What strikes me is:
Well, would you camp out in a stranger's home, all but impossible to navigate in the dark, capable of being spotted at any time, feed your victim pineapple, wait two more hours for it to digest, lead them to the basement, tie up their hands in a way that wouldn't restrain an infant, molest her so it only scratches the interior of the vagina, which you would need three arms to do because you have to pull the cord with one hand and hold her down with the other, using a cord with the wrong knot for your purposes, put tape on her mouth AFTER she's dead when that makes no sense (if you were worried about her screaming, you'd gag her first), sneak into the parents' room, steal their clothing, drip fibers in five areas (not even on the body), go back up, put the clothes back exactly the way you found them, redress the body (when leaving her naked under the tree would be so much better), put her favorite nightgown in the blanket with her, then write a ransom note that really says nothing, knowing you won't get any money, then leave bold as brass, only leaving a speck of DNA that couldn't have been left that night because it was so much older than JB's DNA...
WHEN it would be so much simpler to grab her when she's alone (playing in the yard, coming home from school, etc.,) take her to a place where you feel safe where there's no rush and you have her at leisure (like David Westerfield, Alejandro Avila, Dennis Dechaine et al have done)?