[RnMomof7]

But His mother did follow as did John, to the Cross and then Jesus called her John's mother. So how is she not the mother of those who follow Him now?

That is pure speculation ,it was never stated by Christ or the writers of scripture) that she is our mother.

[GonzoII]

"That is pure speculation ,it was never stated by Christ or the writers of scripture) that she is our mother."

Q. Do you keep the Commandments of God and have the testimony of Jesus Christ.?

[annalex]

it was never stated by Christ or the writers of scripture

At the time of the Crucifixion the entire Church of the faithful consisted of John and Mary. So, no, not speculation.

Further, in Acts 12:17 the reference is plain: "the rest of her seed, who keep the commandments of God, and have the testimony of Jesus Christ".