Wesley Stace said this quote
“ From the third case, she took yet more books, but these were the traveling books that she had brought for her new ward: they were at once sterner and more reassuring that the others. She cared for for these, too- they were books after all, and she would sooner have her own spine broken than manhandle a book - but not with the same devotion, and they were placed in a neat pile on the floor. ”