"And it was there that Lisa, as stipulated in the will of her husband who died four years before her, ended her life,"
You mean I can stipulate that after I die my wife has to go live in a convent? Cool!
At the time, 68 was a advanced age, and for the wife to take a abode in a convent after the death of her husband was the modern equivelent of "Assisted Living for Active Seniors". He was actually looking out for her in the will and the fact his daughter was a novice in the convent was a added plus.
Perhaps THAT is the reason behind the enigmatic smile that nobody considers...she had a good, considerate and loving husband?
Why don't you run that idea by her and tell us what she says? ;)