[Matchett-PI]

"In Luke 1:46-47, Mary refers to “God my Saviour.” Odd she would say that were she truly born sinless herself."

Yes, Mary needed a Savior, too.

Rom. 3:10 "There is none good but one, that is, God."

[BenKenobi]

Of course she did. Why do you think Christ chose her, before she was born?

Christ kept her from sin right from the beginning.