So, you are saying that Mary (actually, her parents), should have BROKEN THE LAW.
THAT WOULD HAVE BEEN A SIN.
There is no parallel between the sin offering and modern confession. The sin offering was a prescribed ritual, not a personal confession of particular sins. Confession is NOT mandated on any kind of schedule—i.e., after childbirth, or before marriage, etc. It has everything to do with particular, personal sins of which a Catholic is aware.
Pretending that a passage about a MANDATED RITUAL, a law that applied to every Jew, provides information about the state of the state of Mary’s SOUL, is a classic example of Scripture-twisting.
Ritual or offering for sin?
See Leviticus 12:1-8. Pay special attention to verse 6.
Was the OT not covered in seminary?
Once again; you try to put words into my mouth.
WHY?
Are you telling me that ROME has decided; all on it's own; NOT to follow Jewish law?