John Chrysostom
"And having said this, she turned around." What sequence is this? Mary enters into conversation with the angels and, before hearing anything from them, turns back.
It seems to me that while she was speaking, Christ by His sudden appearance behind her amazed the angels. Seeing the Master, they at once showed by their appearance, gaze, and movement that they had seen the Lord.
This compelled the woman to look around and turn back. Thus Christ appeared to the angels. But He did not appear to Mary in this way, lest He strike her with amazement at the first glance.
He appeared in a humbler and more ordinary form. This is already clear from the fact that she took Him for the gardener.
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Then, after turning around, since the angels had stood up when the Lord entered, she saw Him and did not recognize Him. Why did she not recognize Him?
Because after the Resurrection the Lord was already clothed with an incorruptible body. He was not recognized except by those to whom He wished to reveal Himself, and when He wished.