How does your priest query in your area?
In my church, I’ve seen priests ask, “Have you had your first communion?” when it’s obvious a kid or teenager doesn’t belong in the communion line and has no clue what to do.
It’s not really a stretch for a priest to ask, “When was your last confession?” or something along those lines when it’s an adult, especially with a language barrier in place.
I agree that yes, generally, people
“presume the integrity of the persons presenting themselves for Holy Communion”
“trust in this fact is to be presumed unless proven clearly, otherwise.”
But by the same token,
“The recipient of Holy Communion also makes declarations by presenting himself for Holy Communion: 1) That he or she is a Catholic; and 2) That he or she accepts the teaching of the Catholic Church in toto and is not consciously or intentional dissenting from known doctrines or dogmas, from whatever the Church professes and believes to be revealed by God; and 3) That he or she is not conscious or gave or serious sin. Therefore a strong responsibility falls on the one coming forward to receive Holy Communion. Since priests and deacons cannot know the state of each person in most circumstances, the fundamental responsibility is on the one who comes forward to receive.”
So if you have an OP who’s talking vaguely about “yeah, I’m totally going to go to confession once I get back home” and “I went to a church service” , you kind of have to wonder if she sent out any signals of unfamiliarity that prompted the priest to ask her about whether or not she’s a Catholic who accepts church teaching— which includes things like “go to Mass every Sunday” and “go to Confession at least once per year” and things like that. And for someone who thought their faith was important enough that their child “spent her entire life in Catholic school”, it shouldn’t be a surprise.