This is an interesting topic. I was immediately reminded of the movie: "When we were soldiers" (Mel Gibson, 2002).
Part of a dialogue "Mel" is having with his children:
Moore: Cecile? I don't hear you praying, honey.
Cecile: I don't wanna be a Catholic! I wanna be a Nethodist like Mommy!
Moore: A-and why's that?
Cecile: So I can pray whatever I want.
Older Brother: That's a sin!
Moore: Oh, no-no-no, that's not a sin. God just made you hard-headed. It's not a sin. Uh, I'll tell you what. You wanna, you wanna pray and thank God for our family?
And he begins with: Hail Mary, Full of Grace, The Lord is with Thee....
I'm sure the Prots would come out with all the 'bible verses' concerning this:(Little do they understand some of that 'bible' they carry, is a remnant of a robbed and looted BIBLE from the Catholics).
But to the point, many Catholic priests and the writings of the Saints (St. Therese of Lisieux)would also tell us we must also pray to God, in our own words. Our Blessed Lady has said the same. (For those who want citations, dates, titles etc...don't bother).
But to address the question...well, all I can say at this moment is: Who knows the mind of God? and to beg the question further: What do we know from Traditional Catholic teaching?