God created her to carry the Savior. And no one ever said she is a deity. She's sinless. There's a difference.
Mat 12:46-50
46 While he yet talked to the people, behold, [his] mother and his brethren stood without, desiring to speak with him.
47 Then one said unto him, Behold, thy mother and thy brethren stand without, desiring to speak with thee.
48 But he answered and said unto him that told him, Who is my mother? and who are my brethren?
49 And he stretched forth his hand toward his disciples, and said, Behold my mother and my brethren!
50 For whosoever shall do the will of my Father which is in heaven, the same is my brother, and sister, and mother.
Don't get me wrong, I love Mary as a believing sister, and I know she would tell us all that she needed a savior for her sins.
She was human. To claim she was sinless is nothing more than accepting a man made supposition. There is no biblical support of the claim that she was sinless. Blessed of God yes, sinless no. We are all, past, present and future, sinners saved by grace, that grace provided by the death and resurrection of Jesus.