CMRI only refuses Communion to those that they know to be NOT-Catholic. CMRI, does not recognize novus ordo as Catholic but a new religion. Which is why I say many times how can a pope be leader of a true and false religion?
This particular grandchild of mine, was baptized Catholic, in fact at the Mount, but her mother who does not practice, puts her into the novus ordo school because it is just a few blocks from her home. My son, the girls father is a weak Catholic, and would perfer her to go to the Mount, but the mother-in-law has, (wife's mother) great influence on them, also not a practicing Catholic. (sigh)
The little girl whom I question, although attends a novus ordo Catholic school, does not know what sanctifying grace is, does not know the difference between mortal and venial sin.
She does not know what Purgatory is, till we told her. She doesn't even know her purpose in life; to Know, Love and Serve God in this life so you can be happy with Him for all eternity in the next life. She is not taught the marian standards of modesty and the school uniform reflects that, and the list goes on and on. She doesn't know these things because the catholic school does not teach them, they sin by omission.
My son told me, at her "first communion", the children, some of them walked to receive in their hands, while chewing gum, his words, "mom, it was a joke"
I am working on all of the above, but believe me it is a chore, because when she goes back to her other grandmother, that grandmother tells her differently.
Sometime I am allowed to take her to Mass with me, and I explain to her, that although she is a member of the Traditional Catholic church, (Baptised there) it is better for her to wait till she learns all her catechism before she can receive Holy Communion. Might be when she grows up, and will not be influenced by her other grandmother. With prayers, and invoking promise in honor of St. Gertrude the Great I have confidence but till then, we wait for God's perfect timing.
Sorry, Mater, I always assumed everyone knew that SV does not accept novus ordo as being Catholic. They for the most part do not have the Faith. The Faith is what makes you Catholic. Many too, there had the Faith but lost it, many there may still have the Faith, who am I to say, through the rosary and scapular.
CMRI, does not accept their sacraments, mass service, or priesthood as being valid, but no more than an Anglican ordination at best.
Please don't think I am not trying my best to teach her, but I don't have her as much as the other grandmother has. She finally learned from me, her purpose in life.