Thanks for the replies. I understand that the Church hasn’t formulated the details of this, which is maybe why some here are saying that Mary could have delivered Jesus in the ‘normal’ way, though the pain part is from original sin so it makes sense to make an exception there. However, because I read those mystics, I tend to believe what they wrote personally, to me it makes sense and the light/crystal description seemed beautiful and meaningful… so I guess I was just wondering if I could believe it that way

it sounds like I can, because the Church hasn’t ever spoken against it, and the writings have been given approval.
When we say that Our Lord experienced everything that we experience, I think the exceptions to that would obviously be sin, but also the things that come from sin… for example concupiscence… and there are certain other exceptions and miracles. There are miracles relating to Our Lord’s Birth that I’ve never though of or imagined, but that make sense when we consider the holiness of God. For example…
"The infant God therefore was brought forth from the virginal chamber unencumbered by any corporeal material substance foreign to Himself. But He came forth glorious and transfigured for the divine infinite wisdom decreed and ordained that the glory of his most holy soul should in his Birth overflow and communicate itself to his body, participating in the gifts of glory in the same way as happened afterwards in his Transfiguration on mount Tabor in the presence of the Apostles (Matth. 17, 2). This miracle was not necessary in order to penetrate the virginal enclosure and to leave unimpaired the virginal integrity; for without this Transfiguration God could have brought this about by other miracles. Thus say the holy doctors, who see no other miracle in this Birth than that the Child was born without impairing the virginity of the Mother. It was the will of God that the most b1essed Virgin should look upon the body of her Son, the God-man, for this first time in a glorified state for two reasons. The one was in order that by this divine vision the most prudent Mother should conceive the highest reverence for the Majesty of Him whom She was to treat as her Son, the true God-man. Although She was already informed of his two-fold nature, the Lord nevertheless ordained that by ocular demonstration She be filled with new graces, corresponding to the greatness of her most holy Son, which was thus manifested to Her in a visible manner. The second reason was to reward by this wonder the fidelity and holiness of the divine Mother; for her most pure and chaste eyes, that had turned away from all earthly things for love of her most holy Son, were to see Him at his very Birth in this glory and thus be rejoiced and rewarded for her loyalty and beautiful love.
The sacred evangelist Luke tells us that the Mother Virgin, having brought forth her firstbegotten Son, wrapped Him in swathing clothes and placed Him in a manger. He does not say that She received Him in her arms from her virginal womb; for this did not pertain to the purpose of his narrative. But the two sovereign princes, saint Michael and saint Gabriel, were the assistants of the Virgin on this occasion. They stood by at proper distance in human corporeal forms at the moment when the incarnate Word, penetrating the virginal chamber by divine power, issued forth to the light, and they received Him in their hands with ineffable reverence. In the same manner as a priest exhibits the sacred host to the people for adoration, so these two celestial ministers presented to the divine Mother her glorious and refulgent Son. All this happened in a short space of time. In the same moment in which the holy angels thus presented the divine Child to his Mother, both Son and Mother looked upon each other, and in this look, She wounded with love the sweet Infant and was at the same time exalted and transformed in Him. From the arms of the holy princes the Prince of all the heavens spoke to his holy Mother: “Mother, become like unto Me, since on this day, for the human existence, which thou hast today given Me, I will give thee another more exalted existence in grace, assimilating thy existence as a mere creature to the likeness of Me, who am God and Man.” The most prudent Mother answered : “Trahe me post Te, curremus in odorem unguentorum tuorum” (Cant. 1, 3). Raise me, elevate me, Lord, and I will run after Thee in the odor of thy ointments. In the same way many of the hidden mysteries of the Canticles were fulfilled; and other sayings which passed between the infant God and the Virgin Mother had been recorded in that book of songs, as for instance: “My Beloved to me, and I to Him, and his desire is toward me” (Cant. 2, 16). “Behold thou art beautiful, my friend, and thy eyes are dove’s eyes. Behold, my beloved, for thou art beautiful”; and many other sacramental words which to mention would unduly prolong this chapter."
Source:
stjames-church.com/book4c4.html