NEW : `` She has a winning smile and easy charm , '' royal commentator says of Hilary Mantel . Nor does Catherine have the luxury of answering criticism , she added . NEW : Mantel says it would be `` unnatural '' if she was not nervous about having a child . Author Catherine describes Catherine as `` precision-made , machine-made '' London newspapers criticize Duchess 's comments as cheap and venomous .
NEW : `` She has a winning smile and easy charm , '' royal commentator says of Hilary Mantel . NEW : Mantel says it would be `` unnatural '' if she was not nervous about having a child . Author Catherine describes Catherine as `` precision-made , machine-made '' London newspapers criticize Duchess 's comments as cheap and venomous .