He saw that if a friend, a trusted friend, were to manage her dismissal, it would be more easy for that friend than for one whose feelings at the moment might carry him away.

In short, Charles was the friend who was evidently pointed out by Providence for that mission.
Charles considered a moment.

He began to see that it would not be done without further delays and scandal unless he did it.
"She must and shall go at once, even if I have to do it," he said at last, looking at Dare with unconcealed contempt.

"It is not my affair, but I will go, and you will be so good as to put off the flying over to Slumberleigh till I come back.

I shall not return until she has left the house." And Charles marched out of the room, too indignant to trust himself a moment longer with the profusely grateful Dare.
"That man must go to-day," said Evelyn, after breakfast, to her husband, in the presence of Lady Mary and Charles.