The detective work performed during Peppard's investigation gives an idea of the complexity in early Christian scholarship.
If YHWH or יֵשׁוּעַ intended to provide a guide to salvation, it has to be said that they were unable to inspire a clear guide. What we are left with is some documents that only tell part of the story and leave huge gaps as to what happened back there, and what precisely the 'truth' is that sets us free. The place that Mary occupies in the lives of so many Christians and the implacable oppostion to the idea by millions of other Christians demonstrates the confusion that YHWH left us with.
Likely more than 50% of modern day Christians venerate Mary in some way or the other and the historical and archaeological evidence indicates that the veneration was part of Christian began early in the church's history, so that by 431 at the Council of Ephesus the belief that Mary was the Mother of God was declared to be dogma.
The oldest known statement about Mary's honored position appears in a hymn dated to the third or fourth centuries (the 200s and 300s).
Beneath Thy Protection (Greek: Ὑπὸ τὴν σὴν εὐσπλαγχνίαν; Latin: Sub tuum præsidium) is the oldest preserved extant hymn to the Blessed Virgin
https://en.wikipedia.org/wiki/Sub_tuum_praesidium
leading to the well-known belief of Catholic and Orthodox Christians that Mary can protect you. As in this portrayal
So while there does not seem to be any evidence that the Christian community at Dura-Europos venerated Mary in that way, the evidence points to a belief,by some (at least) at that time that Mary occupied a special place in their concept of salvation.
