Just after she had closed the cabinet door she heard a tiny rustling sound.
It made her jump and look around at the sofa by the fireplace, from which it seemed to come.

In the corner of the sofa there was a cushion, and in the velvet which covered it there was a hole, and out of the hole peeped a tiny head with a pair of frightened eyes in it.
Mary crept softly across the room to look.

The bright eyes belonged to a little gray mouse, and the mouse had eaten a hole into the cushion and made a comfortable nest there.

Six baby mice were cuddled up asleep near her.

If there was no one else alive in the hundred rooms there were seven mice who did not look lonely at all.
"If they wouldn't be so frightened I would take them back with me," said Mary.
She had wandered about long enough to feel too tired to wander any farther, and she turned back.