Betty advanced towards it on tiptoe, as if she were afraid to awake it--looked at it, and round the room, with an air of great wonder and satisfaction; took up the letter, and grinned intensely as she turned it round and over, and finally carried it into Miss Briggs's room below.

Betty advanced towards it on tiptoe - looked around the room, with an air of great wonder and satisfaction; took up the letter, and grinned intensely as she turned it over, and finally carried it to Miss Briggs.
