No, Mary had a Plan A human nature: one that wasn’t warped, dying or dead from the inheritance of Original Sin. Otherwise, the angelic messenger would have addressed her as a sinner, not as “Full of Grace.” Nor would he have said “the Lord is with thee” -— not even Abraham or Moses was told that. The Lord was already with her -— grasp the implications of that!
Sorry; but your Book SHOWS that she had NO plan.
She merely acquiesced to the PLAN that GOD had for her.