I will answer the question by qouting the CCC999 & CCC1000 on the word "spiritual body".
999 How? Christ is raised with his own body: "See my hands and my feet, that it >is I myself";553 but he did not return to an earthly life. So, in him, "all of >them will rise again with their own bodies which they now bear," but Christ >"will change our lowly body to be like his glorious body," into a "spiritual >body":554
But someone will ask, "How are the dead raised? With what kind of body do they >come?" You foolish man! What you sow does not come to life unless it dies. And >what you sow is not the body which is to be, but a bare kernel. . . . What is >sown is perishable, what is raised is imperishable. . . . The dead will be >raised imperishable. . . . For this perishable nature must put on the >imperishable, and this mortal nature must put on immortality.555
So from CCC999 clearly stated "," but Christ "will change our lowly body to be >like his glorious body," or into a "spiritual body"
Now did Mary as the Catholic Orthodox belief in Mary's Dormition, Mary did not suffers physical death as St.Augustine and Catholic Church upheld that Mary did not commit any actual sins.
Genesis3:15 point to this as God the Father declares "perrenial enmity" between the Woman & Satan.
In CCC999 the Church is talking about Christ giving us a glorified body but CCC1000 teaches even further by saying a "Transfiguaration of our Bodies by receiving the Holy Eucharist"
1000 This "how" exceeds our imagination and understanding; it is accessible >only to faith. Yet our participation in the Eucharist already gives us a >foretaste of Christ's transfiguration of our bodies:
Just as bread that comes from the earth, after God's blessing has been invoked >upon it, is no longer ordinary bread, but Eucharist, formed of two things, the >one earthly and the other heavenly: so too our bodies, which partake of the >Eucharist, are no longer corruptible, but possess the hope of resurrection.556
Basing our understanding on the Church Teaching on CCC999 "glorified body" and CCC1000 saying by faith "thru reception of the Holy Eucharist" the faithful Catholics can experience incorruptibility as our faith in Holy Eucharist teaches.
This clearly manifested in all the incorruptible bodies of the Saints.
So, to answer if Mary experienced or was given a "glorified or spiritual body" like the resurrected body of Jesus while on earth.
The answer is YES! as it affirmed by Mary messages of internal locution to Fr.Stefano Gobbi's Blue Book Marian Movement of Priest.And by Catholic Church teaching in CCC1000 that by FAITH, the reception of the Holy Eucharist our bodies are sanctified to experience "transfiguration" by Jesus abiding presence in us.This biblical promised of Jesus is written in John6:53-55.
Also it's worth pondering the following statements:
The saints provided numerous evidence of experiencing incorruptibility of >the flesh.
Enoch and Elijah was lifted up to heaven body and soul.Take note this two >Patriarchs never receive the Holy Eucharist but was still able to enter God's >Kingdom.
As we all know scriptures said "nothing defiled shall enter God's Kingdom.."
After the Christ Ascension the Apostles together with Mary was praying the >Novena for the Holy Spirit to come.
The Holy Eucharist is like Jesus giving His flesh & blood that comes from >Blessed Virgin Mary in the Sanctified & Glorified formed, as Catholic Church >teaches the Real Presence Jesus in the Holy Eucharist is present >body,blood,soul & divinity.
Now imagine when Mary receives from Her Immaculate Body the Holy Eucharist in >the hands of the Apostles probably St.Peter Celebrated the Holy Mass in the >Upper Room.
Would Mary capable of receiving in Her Immaculate Body what the Catholic Church teaches in CCC1000 regarding "transfiguration"?
" This "how" exceeds our imagination and understanding; it is accessible only >to faith. Yet our participation in the Eucharist already gives us a foretaste >of Christ's transfiguration of our bodies:"
Mary is sinless and Mary lived a Trinitarian life of faith there's no obstacle for Mary to receive what Jesus Christ has promised in the Gospel of John.
As Pope Benedict XVI said: “The transformation of the bread and the wine into >Christ’s Body and Blood, is in fact the principle of the divinization of >creation itself…When, in adoration, we look at the consecrated Host, the sign >of creation speaks to us. And so, we encounter the greatness of His gift…>Through >this gaze of adoration, he draws us toward Himself, within His >mystery, through which He wants to transform us as He transformed the Host” (Corpus Domini ’06).
And from biblical references:
“Who can ascend the mountain of the Lord? Or who may stand in His holy place? >He whose hands are sinless, whose heart is clean. Who desires not what is >vain.” (Ps.24:3).
“All of us, gazing on the Lord’s glory with unveiled faces, are being >transformed from glory to glory into His very image by their Lord who is the >Spirit.” ( 2 Cor.3:18).
This Blood of Christ is real drink (2), and, together with His Flesh, is food >for our eternal life. () Jesus promised the Eucharist in these words: "Amen, >amen, I say to you, unless you eat the Flesh of the Son of Man, and drink His >Blood, you shall not have life in you. He who eats My Flesh and drinks My Blood >has life everlasting and I will raise him up on the last day. For My Flesh is >food indeed, and My Blood is drink indeed. He who eats My Flesh, and drinks My >Blood, abides in Me and I in him." (John 6:54-57).
If St.Paul a great sinner exclaimed while on earth "it is no longer I who lived but Jesus", a proof of Jesus abiding presence for those who received the Holy Eucharist, what more can the Theotokos the Immaculate Mother who is sinless from the beginning and during Her earthly life?
To affirmed that Mary received a "glorified body while on earth" the Blue >Book Marian Movement of Priests by Fr.Stefano Gobbi had a couple of passages >where Mary said God had given Her a "glorified body while on earth".
(Marian Movement of Priests artcle#330 title"Mother of the Eucharist" p. >508-512 and article#107 p.143)
Fr.Stefano Gobbi cause for sainthood was on process and the Blue Book "Marian Movement of Priests" contains Imprimatur and approval of St.John Paul II during his Pontificate.
For more info on Fr.Stefano Gobbi's Movement and messages and it's Church status please see the link;
http://www.mmp-usa.net/history/ and homepage http://www.mmp-usa.net/