Like every other human being, Mary was in need of salvation. It never occurred to her that she had been born without sin, as some have unscripturally contended.
Writers of the OT speak of the “Rock” of salvation (Deut. 32:15; Ps. 95:1), the “God” of salvation (Ps. 24:5), and often refer to God as “Saviour” (Isa. 63:8; etc.).