Almost everything in The Watcher in the Rain is owes its conception to a recorded event. But to fend off those whose minds are like dogeared reference books I should state clearly that these events have been transposed and elided as the narrative required.
Fitzgerald did meet Joyce in the circumstances I employ. Lucia was unrequitedly in love with Beckett. Joyce was exceedingly hostile to Jung and, having only sought his help as a last resort, withdrew Lucia from treatment before it could have any effect. Lucia & Zelda were both in the same Swiss clinic for a time, tho not simultaneously.
As to text. Joyce lovers may be disappointed that I have not directly borrowed any situations or quotations from the Master's works. But if they know anything about his Estate, they will know why!