Then he went with Sara into her little sitting room and they
bade each other good-by. Sara sat on his knee and held the lapels
of his coat in her small hands, and looked long and hard at his
face.

"Are you learning me by heart, little Sara?" he said, stroking
her hair.

"No," she answered. "I know you by heart. You are inside my
heart." And they put their arms round each other and kissed as
if they would never let each other go.

When the cab drove away from the door, Sara was sitting on the
floor of her sitting room, with her hands under her chin and her
eyes following it until it had turned the corner of the square.
Emily was sitting by her, and she looked after it, too. When
Miss Minchin sent her sister, Miss Amelia, to see what the child
was doing, she found she could not open the door.

"I have locked it," said a queer, polite little voice from
inside. "I want to be quite by myself, if you please."

Miss Amelia was fat and dumpy, and stood very much in awe of her
sister. She was really the better-natured person of the two, but
she never disobeyed Miss Minchin. She went downstairs again,
looking almost alarmed.

"I never saw such a funny, old-fashioned child, sister," she
said. "She has locked herself in, and she is not making the
least particle of noise."