"If I didn't we should never have a single thing." The Terror procured a stamp from Mrs.Dangerfield.

He did not tell her of the splendid scheme he was promoting; he only said that he had thought he would write to Aunt Amelia.

Mrs.Dangerfield was pleased with him for his thought: she wished him to stand well with his great-aunt, since she was a rich woman without children of her own.
She did not, indeed, suggest that the letter should be shown to her, though she suspected that it contained some artless request.

She thought it better that the Terror should write to his great-aunt to make requests rather than not write at all.
The letter posted, the Twins resumed the somewhat jerky tenor of their lives.

Erebus was full of speculations about the changes in their lives those bicycles would bring about; she would pause in the very middle of some important enterprise to discuss the rides they would take on them, the orchards that those machines would bring within their reach.