If she was 145 miles from her original location, you think he would have dismembered her? Maybe.
From a 2009 FBI report:
According to a 2002 federal study on missing children, 99.8 percent of children reported missing were located or returned home alive. The remaining 0.2 percent either did not return home or were not found. The study estimated that most of missing children cases involved runaways from juvenile facilities and that only an estimated 0.0068 percent were true kidnappings by a stranger. The primary conclusion of the study was that child abductions perpetrated by strangers rarely occur. However, when they do occur, the results can be tragic.
The Washington State Attorney Generals Office also conducted research on child abduction murders and made the following observations based on its review of over 775 cases between 1968 and 2002:
- in 76 percent of the murders of an abducted child, the child was murdered within 3 hours of the abduction;
- in 89 percent of the cases, the missing child died within 24 hours of disappearing;
- in nearly 60 percent of the cases, more than 2 hours passed between the time someone realized the child was missing and the time police were notified; and
- the primary motive for the abductor was sexual assault.
https://oig.justice.gov/reports/FBI/a0908/chapter3.htm
Given the rarity (.0068%) of "true kidnappings" of children and that 76% of murdered abducted children are murdered within 3 hours of the abduction, and in 89% of cases the missing child died within 24 hours of the abduction we might derive to the following speculation:
1) re: 76% of murders of abducted children occur within 3 hours:
Since LB's remains were discovered far across Washington state, we may assume LB was not murdered within 3 hours since the drive time from McCleary to the <unpublished recovery location> would absorb most of or more than 3 hours, depending on how close the location is to Washington state's eastern border.
Since primary motive is sexual assault and given the above speculation, we may safely conclude LB's case likely categorizes to the next statistic point:
2) re: 89% of cases, the child died within 24 hours:
. We can not directly derive from these statistics when the sexual assault occurred in this case because we are no longer bounded within 3 hours... we not only have the 24 hours statistic, we also have almost 9 years between abduction and recovery.
Did assault occur within McCleary or within the <unpublished recovery location>?
Would a perp risk travelling with an awake/unconscious abductee or a deceased abductee in their vehicle?
How long did the perp keep LB alive, less than ~24 hours or was it days? Given what we know (statistics) we should lean toward the at-least-3-hours and the less-than-24-hours time frames.
That's more than enough time to assault and dismember, but why dismember?
Possible Answer: to reduce chances of discovery.
At this point we can not assume LB was recovered fully intact (all bones within immediate discovery location) or partially recovered, where components are scattered randomly between McCleary and <unpublished recovery location>.
I was not able to locate statistics on the condition of recovered body / remains but, we do have the alleged statement by a one-time POI, DG: ~"she's dead and dismembered." That alleged statement, plus the screen-captured headline, "partial remains" steers us toward the possibility.