Here's my new guess:
Gene passed away naturally several days ago
Wife killed herself immediately after finding him
Dog starved since nobody was there to feed it
OR
Dog died from eating the pills (or something else dangerous that a dog would otherwise avoid) once starvation started to kick in
OR
Dog died b/c it needs daily meds to survive & nobody was there to administer them
Gene passed away naturally several days ago
Wife killed herself immediately after finding him
Dog starved since nobody was there to feed it
OR
Dog died from eating the pills (or something else dangerous that a dog would otherwise avoid) once starvation started to kick in
OR
Dog died b/c it needs daily meds to survive & nobody was there to administer them