So, if two actual historical queens took Nazarite vows in Jerusalem 20 to 30 years after the death of Jesus, is it too far afield to think that Mary/Mariamne made a long-term even life-long Nazarite vow until her prophecy was fulfilled…until her son returned to claim the kingdom? It will be a short discussion.
My first thought is, if I had a prophecy that I would bear a special son, I would want to look up how to do it right. Pre-google, you went to a scribe to look it up in the Torah or the prophets, as clearly the gospel writers did for the prophecies Jesus fulfilled.
And…in another “believe it or not,” there is a prescription given to a young woman by an angel on how to bear such a son…it is the story of the mother of Samson.