This is not a DNA case. A carefull analysis of the autopsy report is enough to solve the case.
It tells us among other things that:
1. JB´s skull fracture was an accident
2. JB bled internally which means she was alive after the skull fracture, probably in a coma
3. JB died of strangulation
4. JB´s body was in rigor mortis when found at about 1:00 PM, meaning that she died at least 8-10 hours before she was found. This would put the TOD at about 4-5:00 AM.
If a prosecutor concentrates on solving the case using the autopsy report and not DNA, it will become apparent that the crime was an inside job thus eliminating an intruder.
It tells us among other things that:
1. JB´s skull fracture was an accident
2. JB bled internally which means she was alive after the skull fracture, probably in a coma
3. JB died of strangulation
4. JB´s body was in rigor mortis when found at about 1:00 PM, meaning that she died at least 8-10 hours before she was found. This would put the TOD at about 4-5:00 AM.
If a prosecutor concentrates on solving the case using the autopsy report and not DNA, it will become apparent that the crime was an inside job thus eliminating an intruder.