Kate is the one reading the story. Since we are given the information 'Kate reads story', there's no doubt that Kate is the reader. Reading stories can be a solitary and fulfilling activity for Kate. She might choose stories based on her interests, like mystery, romance or adventure, and get immersed in the world created by the author.
Peter reads a story. Peter could be any person. He may have a particular interest in the type of story he is reading, whether it's a mystery, a romance, or a science - fiction. Reading stories is a common activity that many people enjoy, and in this case, it's Peter who is doing the reading.
I don't know the specific story that Worf reads as there's not enough context. It could be a Klingon epic, a Starfleet adventure, or some ancient legend.
There's no way to tell for sure if it's a famous story just from this statement. It might be a local or niche story that only a select group of people are aware of. Maybe it's a story that has been passed down in a small community and is very well - known there, but not on a larger scale. It could also be a new story that is starting to gain attention but isn't yet considered 'famous' in the traditional sense.
There are so many possibilities for the story. It could be a classic like 'Little Red Riding Hood' which is full of suspense and moral lessons. Or it could be a story about a magical land with strange creatures. Without further details, we can only guess that it's a story that the granny finds interesting and suitable for her audience, perhaps something with positive values and engaging characters.
I'm not sure which 'Dolly' specifically is reading a bedtime story. There could be many people or characters named Dolly. It might be a mother named Dolly in a family, or perhaps a fictional character named Dolly in a children's book who has the task of reading bedtime stories.
Since Elmo is often associated with children's education, when he reads a story, it usually has some educational value. It could be teaching kids about letters, numbers, colors, or important life lessons. So it's interesting not just for entertainment but also for learning.