abc kids stories can also stimulate children's imagination. By listening to different adventures in the stories, kids can create their own pictures in their minds. For example, if the story is about a magical land, kids can imagine what the land looks like, what kind of creatures live there, etc.
Hoot is definitely fiction. It has elements like made-up characters and scenarios that aren't real in the traditional sense. The plot and settings are crafted to entertain and engage readers in a fictional world.
A giggle sound graphic novel is likely a graphic novel that incorporates elements related to giggle sounds. Maybe it has characters that giggle often, or there are sound effects of giggles added to enhance the comical or light - hearted nature of the story.
Mary might have giggled because she was in a lighthearted mood. It could also be that a hidden surprise was revealed at the end, causing her to react that way. Or maybe it was just a way for the author to show her positive emotions without giving a clear explanation.