and if the neckline of her dress was a shade low , it did not seem scandalous , for her gray eyes were full of an innocence that said that she did not know of desire , not yet , but there was a lushness to the curve of her lip , a dark light in her eyes that said that under the right hands she would be a pupil who yielded the most exquisite result ... ... magnus took a step back from her as if she were a poisonous snake .