Setting it down on her lap, she reached her arm in, her hand grazing against various familiar objects such as her clothing and the stack of books, for which she had cast the undetectable extension charm on the bag in the first place. And then she felt it, or rather them. Digging her other arm in as well to pull both objects up, she was surprised to find both the Diadem and the golden cup of Helga Hufflepuff.