When Lucy ran into the wardrobe he went after her seeing what she was doing and hiding,after realising what she had said the past couple days he thought she was going back in their to see her "Magical World"
He went in and found himself in a snowy white plain with 2 big hills he shouted Lucy's name and saying sorry over and over again until he heard another noise one like a trotting horse
When the noise came to a halt he saw a big tall woman and a small stout man the lady was pure white and nothing else she wore a crown on her head symbolizing that she must be queen.The little man shouted "YOU THERE" Edmund stuttered but he could not get his words out of his mouth at the time he shouted again "YOU DEAR COME IN THE WAY OF THE QUEEN OF NARNIA"
While the witch was screaming Edmund she had a change of heart and realised that he was one of the sons of Adam which she was hunting down and trying to kill she wanted Edmund to be the bait so she sat him in her sleigh rapping him in her coat offering him turkish delight but it was so good that he couldn't resist any more so the white witch said that if he wanted anymore he would have to bring his brother and sisters
She then tells him that if he comes back without his brother and sisters she would not give him any turkish delight she then told him to hurry off and when she said that Lucy had popped out of no where he then went back with her out into the normal world
When they came out Lucy wanted to tell Peter and Susan but Edmund decided to say that they were playing pretend she then runs away