Despite still having her other two children, the woman "cried for the one who died, unable to be consoled," he said.
Francis said this visit as well as that of the women rescued from forced prostitution stayed in his mind.
Pope Francis' 40-minute video interview with journalists Paolo Ruffini and Lucio Brunelli of TV2000 touched on a variety of other topics, including the fruits of the Jubilee of Mercy, papal temptations, the importance of having a good sense of humor and how he deals with stress.
He said the Year of Mercy's celebration in every diocese of the world instead of just in Rome "universalized" it.
"It was the entire Church who lived this Jubilee, it was like a Jubilee atmosphere," he said, noting how he heard news from dioceses around the world telling stories of people drawing closer to the Church and strengthening their personal encounter with Jesus.
The Jubilee, he said, was "a blessing from the Lord" and "a great step forward." He credited his predecessors Bl. Paul VI, who began the Jubilee Year tradition, and St. John Paul II, "who put a very strong accent on mercy."
"It planted a lot of seeds," he said, crediting the spiritual growth people during the Holy Year to God's grace.
"I think that the Lord will grow good things, simple, daily, in the lives of people," rather than through spectacles, he said.
When asked about a comment he had made saying "the human attitude closest to divine grace is humor," Francis said having a good sense of humor is a grace that he asks for every day.
He said he prays the same prayer of St. Thomas More: "Give me, Lord, a sense of humor," so that he "knows how to laugh ahead of a fight." A good sense of humor "lifts you," he said, and allows you to see things with a renewed perspective.
The Pope also cautioned against having an attitude of rigidity, as well as an attitude of hypocrisy. Pointing to the Sermon on the Mount from the Gospels, Francis noted that it ends with Jesus saying "be merciful like the Father," which was the theme of the Jubilee.
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"It doesn't say: be just like the Father," he noted, but stressed that "it's the same! The justice and mercy of God are one thing. Mercy is justice and justice is mercy. And they cannot be separated."
Another interview topic were the temptations a Pope faces. According to Francis, they are "the temptations of any person, of any man," according to the weakness of their own personality.
The devil always uses these weaknesses to enter, he said, naming impatience, egoism and "a bit of laziness" as examples. The saints were also tempted, but went to Jesus and placed their trust in him for help.
Pope Francis was also asked what bothered him most: the insults of his critics versus the false admiration of flatterers.
His immediate response was "the second! I am allergic to flatterers. I have an allergy." This allergy, he said, "comes to me naturally," because "to flatter another is to use the person for a purpose...to get something for oneself."
On the topic of stress, the Pope said that even though he frequently feels tired, he has a way to keep his stress level down: "I pray: that helps me a lot." Celebrating Mass, praying the rosary and the Liturgy of the Hours as well as simply speaking freely with the Lord are all things the Pope said help him to stay calm and balanced.