Final answer:
The provided texts do not include the information needed to answer who spills the beans to Moira about her party.
Step-by-step explanation:
The information provided does not contain a direct answer to the question about who spills the beans to Moira about her party. The excerpts given are from different contexts and do not appear to be related to a character named Moira or an incident involving revealing information about a party. Without more specific details or context about Moira and the party in question, it is not possible to provide an accurate response to this question.