Do you think, before you go about making things, that it’s normal to figure out what your prototype will be like?
You can make a thousand variants---- but you still have your “ideal” in your head.
If that’s true with us, how much more true is it with God?
When we normally think of prototypes, we think of Adam and Eve. They were the first ones. And they were ideal. Except they fell. And God knew they would fall, but he made them anyways.
Later, we had the New Adam (Jesus) and the New Eve (Mary). They weren’t the first ones on earth, chronologically speaking, but they were not only ideal, but they were perfect. They had no flaws. And we’re able to look to them to see what God’s ideals are— and to emulate them.
One of them was Jesus. He had a preexistence as the Second Person of the Trinity. Do you think he figured out what his Incarnation would be like, before it came time to Incarnate, or do you think he was sitting around in Heaven, and saw what was going on earth, and said, “Oh, shuckydarn, looks like I need to go down there and set those people straight. I thought they’d work it out themselves— but I guess that’s too much to expect.”

So if the Second Person of the Trinity most likely had his Incarnation figured out before the creation of the world, do you think he also took into account figuring out what sort of a mother he would like to be born to? Or do you think he just randomly decided to be born to a random person, and he’d just give the graces to whoever won the lottery?
Anyone who listens to the readings at Christmas knows that there was a whole lot of forethought that went into Jesus’ lineage. Mary was one of the most critical parts of Jesus’ lineage— do you think God would have been careless about that part?