Introduction to Sally by Elizabeth Von Arnim

Meanwhile, at Almond Tree Cottage, Jocelyn's mother had become Margery to Mr. Thorpe, and he to her was Edgar.

The idea she had played with, the possibility she had smiled at, was now fact. She had reacted to Jocelyn's marriage by getting involved, immediately and profoundly, in Mr. Thorpe. Without quite knowing how, with hardly a recollection of when, she had become engaged to him. He had caught her at the one moment in which, blind with shock, she would have clung to anything that offered support.