You’re a good Catholic girl, aren’t you?
I’m a Catholic woman in my late 40s who tries hard to be good. This includes trying to avoid rudeness of all kinds, including inappropriate language. However, it doesn’t include confusing tacky behavior with blasphemy.
Going to Walmart in one’s pajamas is tacky, but it’s not the same as going naked. (This is a loose analogy to the subject of cursing vs. vulgarity, not a precise one.)