Well, visions of a "heavenly mother" aren't likely to be recieved well on any Christian forum other than a Catholic site (or one sponsored by a daughter church that observes customs like prayer to the saints,) because of a long history on Earth of paganism surrounding fertility cults.
In the middle east there were goddesses called Ashtoreth and Ishtar, and in the Mediterranean a number of goddesses like Ceres, Ops, Rhea, Demeter, and Hecate to just name a few. Fertility goddesses were common world wide sometimes associated with agriculture and horticulture, but also with human fertility. Some pagan cults practiced both ritual sex and infant sacrifice, so God dealt with them severely during the conquest of Canaan.
In Rome such gods were not only worshipped in temples, but people kept miniature versions in little sanctuaries within their homes for private prayer. When Christianity became lawful and the state approved religion under Emperor Constantine, the Roman Church permitted the continuation of this practice, but substituted "patron " saints for the old gods of Rome. The "mother of heaven" was the pagan concept of the wife of the principle god or father of the gods, Jupiter in Rome, Zeus in Greece.
Most Christians take a dim view of incorporating pagan practices into Christianity. However, there is a biblical precedent for associating cities with a feminine persona. Jerusalem itself is frequently referred to as a virgin daughter or a harlot in scripture.
The tribes of Israel and even the body of Christ are pictured as a bride. The queen of heaven is only mentioned in scripture as an idol of paganism, but the bride of Christ receives real authority from God. However, the bride isn't equal in authority to Christ, but under His "headship." There is at least one passage in scripture that rebukes the "widow" for taking that authority upon herself.
“Sit in silence, and go into darkness,
O daughter of the Chaldeans;
For you shall no longer be called
The Lady of Kingdoms.
6 I was angry with My people;
I have profaned My inheritance,
And given them into your hand.
You showed them no mercy;
On the elderly you laid your yoke very heavily.
7 And you said, ‘I shall be a lady forever,’
So that you did not take these things to heart,
Nor remember the latter end of them.
8 “Therefore hear this now, you who are given to pleasures,
Who dwell securely,
Who say in your heart, ‘I am, and there is no one else besides me;
I shall not sit as a widow,
Nor shall I know the loss of children’;
9 But these two things shall come to you
In a moment, in one day:
The loss of children, and widowhood.
They shall come upon you in their fullness
Because of the multitude of your sorceries,
For the great abundance of your enchantments.
10 “For you have trusted in your wickedness;
You have said, ‘No one sees me’;
Your wisdom and your knowledge have warped you;
And you have said in your heart,
‘I am, and there is no one else besides me.’ Isaiah 47:5-10
In context this was about Babylon and the Chaldean empire, but has a broader interpretation in reference to "Babylon the Great" as described in the book of the Revelation.
I would suggest that your dream would be more likely a reference to either the church, or the same Babylon, but I'm not familiar with your dream. Was your vision specifically identified as about the "mother of heaven" ?
Did you post it here?
Eve, the wife of Adam, is identified as the "mother of all living" by Adam, the son of God. That itself has certain implications in regard to the culmination of human society prior to the return of Christ (but thinking about it just gives me a headache.)