As a teen convert to the Church, I was taught that we have a Heavenly Mother, but She was being protected by Heavenly Father from the fallen-ness of our world and so we did not pray or speak about Her. The idea, as I understood it, was that if no one thought or spoke about Her, somehow She would be protected. How an immortal, all-powerful goddess could stand in need of protection was never explained to me. Even my teenaged convert self knew that was hooey.