Was this common/realistic?
After Horace dies, everyone is sent away -- the servants, the two brothers, the nephew... even the doctor. Shortly thereafter, Regina is ready to retire.
But with her dead husband lying in a room down the hall from her? He's not even prepared/embalmed for a family viewing or a wake, nor is he ensconced in the main parlour. Was it quite ordinary to leave a corpse right where he lies if the person died "after business hours"? You would think Regina would send Cal to alert the undertaker (who I assume would be used to round-the-clock calls for services), and furthermore, that she would at least begin composing telegrams to notify Horace's relatives.
And speaking of Horace's death...
When Zannie was alone with her father, do you think he managed to tell her what her mother had done before he expired? She seems to know, even before Ben makes his suspicions known. Or did she surmise it on her own?