1Ti 2:5 For there is one God, and one mediator between God and men, the man Christ Jesus.
Mat 12:46 While he yet talked to the people, behold, his mother and his brethren stood without, desiring to speak with him.
Mat 12:47 Then one said unto him, Behold, thy mother and thy brethren stand without, desiring to speak with thee.
Mat 12:48 But he answered and said unto him that told him, Who is my mother? and who are my brethren?
Mat 12:49 And he stretched forth his hand toward his disciples, and said, Behold my mother and my brethren!
Mat 12:50 For whosoever shall do the will of my Father which is in heaven, the same is my brother, and sister, and mother.
Luk 11:27 And it came to pass, as he spake these things, a certain woman of the company lifted up her voice, and said unto him, Blessed is the womb that bare thee, and the paps which thou hast sucked.
Luk 11:28 But he said, Yea rather, blessed are they that hear the word of God, and keep it.
Jesus put Mary on the same level as all the saints,so she cannot be the intercessor for she would not qualify for she is a sinner like all people that need to be saved.
She has no bearing on representing the saints,prospering them,and praying for them.