Final answer:
Unable to answer the question about Molly's sleepover due to lack of context or specific source material reference. A proper answer requires identifying the work and understanding the narrative.
Step-by-step explanation:
The student's question pertains to a specific event in a narrative involving characters named Molly and Ashley. Unfortunately, without context or reference to the source material, such as a book, movie, or television show, an accurate response cannot be provided. It is important when seeking answers about narrative content to provide detailed context or identify the specific work in question.
If the context was provided and it was a part of a known text or story, then the answer would include who Molly decides to have a sleepover with after having her initial plans with Ashley cancelled. The answer would involve character analysis, understanding narrative arcs, and recognizing interpersonal dynamics within the story.