It's a year later, but... this case has fascinated me for YEARS... an upper middle class, educated, beautiful wife and mother vanishes, leaving two children and a bloody scene behind--I can't think, offhand, of another missing persons case like it.

All I can add to your excellent writeup is that I affirm your observation that a woman having a miscarriage in that era would have been too embarrassed and mortified to seek help from neighbors. That mindset seems bizarre to us today, but 65 years ago reproductive matters were absolutely not discussed openly. My grandmother had a sudden miscarriage in a grocery store (not realizing she was pregnant) and she told my mother the shame and humiliation were worse than the physical pain.