"I belong to him!" she thought with a thrill of ecstasy and of despair.
"But he'd better be careful!" she grumbled.

"If I should begin to dislike him there'd be no going back." And then it recurred to her that this would be as great a calamity of loss for her as for him--and she went at her packing in a better humor.

"I'll explain to him that I yield this once, but--" There she stopped herself with a laugh.

Of what use to explain to him ?--him who never listened to explanations, who did not care a fig why people did as he wished, but was content that they did.
As for warning him about "next time"-- how ridiculous! She could hear his penetrating, rousing voice saying: "We'll deal with 'next time' when it comes.".