He had got out and taken her key to open the door.
He took the key from her and opened the door.
It is like taking the key of the car away.
Her eyes were huge as she reached out and took the key from him.
He took his own key and walked to a corner of the room.
She reached up and took the key from around her neck.
He was able to enter because no one had thought to take his key before trying to kill him.
With the other hand, he took her key and opened the door, stepping inside first.
She went to the door and took the key from her purse.
He ignored her hand, took the key from the other one and opened the door.