This answer contains spoilers… (view spoiler)[I think it was Jane. In the last chapter, the one planning to end her life speaks about her days in little theatre paying off. I remembered a mention of little theatre earlier in the book, so did a wordsearch on my Amazon Fire and it took me back to chapter three where it speaks of Jane being a leader and heading things up "whether they were committees or teams or the cast of her local little theatre." So I'm going with Jane! (hide spoiler)]
Patricia Sands I get asked that question frequently! Who do you think? Email me at email@example.com and I tell me your answer. I'll let you know if you are right and I look forward to hearing from you.