It was so unusually breezy and amusing.

But remembering that she had never happened to mention her correspondence with Jack to Mary, and that her surprise over it might lead her to say something before Henrietta that would be embarrassing, she dropped it into her shopping bag as soon as she had read it, and said nothing about it.
That is how it happened to be with her when she accompanied Mary that afternoon on her joyful quest of "fine feathers." They went to many places, and at last found a dress which suited her and Joyce exactly.
Some slight alteration was needed, and while the two were in the fitting room, Betty passed the time by taking out the letter for a second reading.

A glance at the post-mark showed that it had been delayed somewhere on the road.

It should have reached her the day that she left Warwick Hall.

It had been forwarded from there.