Memory

I was reading a book to K and as I pointed out the picture of a bone, she said 'Hi-jiji' (Great grandfather). I was surprised for a moment and tried to understand why she'd made the association. Then it occurred to me that she could be referring to the ceremony at the end of his funeral rites, about a month ago, where we picked out his bones to be placed into the urn. Could she have really understood the death ritual and has it really made such a deep impression on her?