"She's gone," he answered.
There was a long moment of silence between them, and then Mae said, "Poor Jesse."
"He knowed it, though," said Tuck. "At least, he knowed she wasn't coming. We all knowed that, long time ago." (Epilogue.25-27)
If the Tucks all knew that Winnie wasn't going to drink from the spring, does that mean it wasn't really a choice at all? Or had she just already made up her mind?