That's what I thought you'd both say.
Time for a Bible lesson . . .
When Jesus made this statement in Matt. 6:7, he was speaking about the nonsensical babbling of pagans to their gods – NOT the sincere prayers of the faithful. We read about them in 1 Kings 18:26-29, where the pagan prophets on Mount Carmel tried to invoke Baal all day long, repeatedly calling on his name and performing ritual dances
In Matt. 26:44, our Lord himself prayed the exact same prayer THREE TIMES in the Garden of Gethsemane after the Last Supper.
In the Parable of the Determined Widow in Luke 18:-87, Jesus emphatically states that God hears those who keep petitioning him in sincere faith: “Will not God then secure the rights of his chosen ones who call out to him day and night? Will he be slow to answer them? I tell you, he will see to it that justice is done for them speedily.”
In Luke 18:13, the tax collector kept beating his breast and praying, “God be merciful to me, a sinner.” This was pleasing to God.
We see in Rev. 4:8 that the angels pray the exact same prayer day and night without ceasing in the presence of almighty God, “Holy, Holy, Holy is the Lord God Almighty.”
Psalm 136 goes on for TWENTY SIX VERSES in a row, repeating the exact same prayer, “God's love endures forever”.
Similarly, in Dan. 3:56-88 we read the exact same prayer for THIRTY TWO VERSES, which is “bless the Lord; praise and exalt him above all forever.” This is FAR more repetitious than a decade of the Rosary.
You both need to stop quoting the Bible until you UNDERSTAND what it means . . .