From the Gospel according to Mark
Mark 7:24-30

Jesus went to the district of Tyre.
He entered a house and wanted no one to know about it,
but he could not escape notice.
Soon a woman whose daughter had an unclean spirit heard about him.
She came and fell at his feet.
The woman was a Greek, a Syrophoenician by birth,
and she begged him to drive the demon out of her daughter.
He said to her, “Let the children be fed first.
For it is not right to take the food of the children
and throw it to the dogs.”
She replied and said to him,
“Lord, even the dogs under the table eat the children’s scraps.”
Then he said to her, “For saying this, you may go.
The demon has gone out of your daughter.”
When the woman went home, she found the child lying in bed
and the demon gone.

It’s by faith. 

“The crumbs that the children throw away.” How sad that we waste the graces that God gives us, and there are so many that they could heal others who have more faith. Today we highlight, on one hand, the sorrow of wasting the grace we’ve received, largely through the Sacrament of Marriage, and on the other hand, the power of our faith, which can cast demons out of our children. Here, the Lord doesn’t look at the daughter, He relates only to the mother, but by the power He has granted to the mother’s faith, the daughter is saved. Amazing! Let’s not waste this grace for our children (biological or spiritual) due to a lack of faith. 

Applied to married life: 

Inés: We’re going through a rough patch, first with our children, who seem to be getting farther away, and there’s no way to bring them back to God; and second with our mentees, who hardly pay attention to what we tell them, so there are no advancements, and it seems they’re starting to get tired.
Pedro: This is the time for faith, Inés. This is the time for faith. Let’s ask the Lord for them and trust that the Lord will act for sure. One word from Him will be enough to heal them.
Inés: Thank you, Pedro. Sometimes I forget that we can do nothing without Him, but with Him, being united, you and I can do everything through the strength of our Marriage Sacrament.
Pedro: He will do as much as our faith allows. He already said it, and He never lies. 

Mother, 

Increase our faith. Always more, we always need more. Blessed be the Lord who allows us to act through faith.