About three months.
Then she returned
To her home.”
Ἔμεινεν δὲ Μαριὰμ σὺν αὐτῇ ὡς μῆνας τρεῖς, καὶ ὑπέστρεψεν εἰς τὸν οἶκον αὐτῆς.
Luke said that Mary remained with Elizabeth (Ἔμεινεν δὲ Μαριὰμ σὺν αὐτῇ) about three months (ὡς μῆνας τρεῖς), almost up to the time of John’s birth. Then she returned to her home (καὶ ὑπέστρεψεν εἰς τὸν οἶκον αὐτῆς), being about three months pregnant. Once again, there is no indication if she had anybody with her on this eighty-mile trip home. Strange, that she did not stay for the birth of John, which was a big deal. However, Luke had her leave the scene for the birth of John,