Unknown cause of death

An original autopsy yielded no obvious causes of death (no blood clots, wounds, toxins, etc). Tests the coroner subsequently ordered all came back negative, indicating Rebekah' death was from 'natural causes.' The best assumption is something heart related, but nothing for sure. She could have had one of several different conditions, none of which can be confirmed post-mortem (something like Long QT Syndrome). It may be something other family members could have in which case, an EKG may be able to spot an irregularity, but not necessarily. DNA testing could be used to look for 'markers' that may cause some type of heart irregularity.
David and the children are spending time between the Vance's and the Sauter's (his parents), appreciating the continued support from family and friends.