who had no intention of converting
If we are allowed to make the above decision (which we're not), then the following errors arise:
a. Since we decide who didn't convert, then we limit who we must pray for.
b. Since we decide who didn't convert, then we make ourselves the judge of sanctity.
c. Since we decide who didn't convert, then we limit God's mercy.
d. Since we decide who didn't convert, then we put limits on God's grace and omnipotence.
e. Since we decide who didn't convert, then we elevate God's justice above His mercy, when both are equally infinite.
f. Since we decide who didn't convert, then we judge the infinite (i.e. God's plans) using our finite brains.
All of these are horribly uncatholic errors.