The ending (spoilers, obviously)
I just watched this on Netflix, I've never read the book since I've never heard of it before.
Anyway, at the end of the movie when Rynn poisons the tea, do you think she really intended to kill herself or was she planning to kill Frank Hallet all along? She places the clean cup of tea in front of him, but hesitates when it comes to taking a drink from her own cup and just stares at it, though I can't decide if this is Rynn contemplating a minute plan, mentally preparing herself for her death or waiting for Mr. Hallet to drink from her cup.
Earlier in the kitchen when he says "you know how to survive, don't you?" And she replies "I thought I did", this made me think that maybe she really has given up. Her three-year plan has been completely changed and she's gotten in over her head with seemingly no way out.
What do you think?