original_query: Who is Serena hesitant to have dinner with and why?
query: Who is Serena hesitant to have dinner with and why?
answer: Serena is hesitant to have dinner with Georgina because of a past negative experience or incident between them that's implied to be serious and not explained in detail.  This is further supported by Serena's later confrontation with Georgina where she says that if Georgina goes down, she'll go down with her, indicating a shared secret or implication of shared wrongdoing.