Why do you imply the midwife in the "we"? She was within the cave, wherein the light was shining. Whereas the "we" seems to imply those without the cave.
Only a few sentences later:
And, behold, an angel of the Lord stood by her, saying to her: Salome, Salome, the Lord has heard you. Put your hand to the infant, and carry it, and you will have safety and joy.
It seems infant and small child can be, like in English, used interchangeably. In all technicality, an infant is a small child.
I already mentioned that interpreters translate the word differently in order to fit their centuries later doctrine. From the same work I quoted:
"
3 And lo, an angel of the Lord appeared, saying unto her: Salome, Salome, the Lord hath hearkened to thee: bring thine hand near unto the young child and take him up, and there shall be unto thee salvation and joy. "
"Young child" doesn't fit your theology, hence you have a translation that says "infant".
As to the "appearance", no amount of time is given for how long the light shined. And it would certainly appear that, to an outsider who had seen them with no child before the light, and with a child present after, that the child had appeared. Either way, the lack of a narrative of the birth itself is shared by all four of the gospels.
I also keep saying one has to read the PoJ as those c150ad wrote it. It
contrasts with scripture (born by water and blood) and Tertullian (born with all the afterbirth, cord, water, and blood) and Clement of Alexandria (did not remain in the childbirth state).
The PoJ is docetic. Just like Hermas (the Shepherd) is docetic. These things are not scripture or apostolic for a very good reason.
Finally, I have never seen a gate press, and the whole body is involved in contractions in labor. You might construe that they were Braxton-Hicks contractions, but that still requires a physical infant. Throughout the PoJ, the physicality of her pregnancy is evident:
13. And she was in her sixth month; and, behold, Joseph came back from his building, and, entering into his house, he discovered that she was big with child
And he turned, and saw that Mary was with child.
Were it an incorporeal birth, why would the corporeal signs of a physical pregnancy be needed?
What was inside her pressed to get out. But unless you agree with scripture, tertullian, and clement that it was a normal, virginity ending human birth, it wasn't through the "east" "gate", but the "south gate".
Again, the idea of a phantom birth or "did not come in the flesh", is NOT to say people couldn't see him or touch him. It was the idea (at that time) that he passed through Mary only. She was a straw, a conduit, through which he passed to appear on earth.
Again, look at it for the arguments at that time. Not 1800 years removed with the full-blown mariology. But back then. The argument was between a normal human by water and blood birth, and the docetic, conduit, remained in the birthlike state without cord and placenta. IOW, as John says, it was between the two contrasting ideas that Christ came in the flesh or anti-christ (did not come in the flesh). That was the issue they fought over.
Centuries later as they hammered it out, they ended up maintaining both ideas. Mary remained a virgin (somehow) and Jesus came in the flesh (somehow). The Trullo council spelled it out finally (no afterflux, Mary remained a virgin); the council simply rubber stamped what Marcion and Valentinus and PoJ had been saying, while yet maintaing the Christian message of Christ as God-with-us (Emmanuel).
John emphasizes the Word became flesh. Tertullian and Clement of Alexandria (and Cyril of Jerusalem) witnessed to that fact. If Mary gave birth normally (water and blood and cord and placenta (all the human things)), then her virginity is gone, but we will maintain God-with-us. For them, it was two diametrically opposed ideas, it was Christ or anti-christ.
Mary was a normal person who was blessed, chosen by God to bear Christ. She did. Her relationship with Joseph thereafter is frankly none of our business. What is our business is to proclaim Emmanuel.