Sentence:  She said quite naturally, as if nothing had happened, “I want you to go back home, Victor darling. You mustn't worry about me any more.”' Victor told me he could hardly <WSD>credit</WSD> it, at first, that she could stand there and say this to him. 
Meaning of the word marked with <WSD> tags:  To believe; to put credence in. (British usage?)