If one "choses" to read certain Scriptures separated from others then one is a "choser", in Greek, a heretic. Those verses are very instructful when read along with St. Lukes description of the meeting of Saint Isabel and the Virgin Mary where St. Isabel says "Who am I that the Mother of my Lord comes to me?"
Mary is the Mother of God, and that passage of Luke makes a parallel between her and the Ark of the Alliance, something that is far from assigning her no role at all.
When later Jesus gives us the teaching you've quoted, He's rebuking the idea that mere bloodlinks would give anyone any privilege. Putting the two passages together, we learn the Virgin Mary is special not just for her fleshly bonds to Christ, but because she is the one who most perfectly witnessed to what Jesus said by doing the will of the Father - what she did by saying yes to God and living a holy life.
Also, the fullness of her role is seen the book of Revelation where she is seen "clothed in sun, with twelve stars for a crown and the moon at her feet". And all that, not because she is related to Jesus, but because she does the will of the Father with all her heart and being, more than anyone had ever done and ever will.