sacrifice self for story

reading john irving's a widow for one year...
the main character is a writer who is very anti-autobiographical and prides herself on the power of fictionalized facts until she encounters a rupture in her planned plot structure while doing research on her next novel, forced to rethink her approach
she is drawn into the newly forming narrative, just to see "what happens next" she gives herself up to the story as it merges with real life... i love the idea of an artist straddling the boundary between fact and fiction a dangerous middleground where anything is possible.

unfortunately everything goes awry for the novelist in my book.
she is drawn into a totally unexpected chain of events
and somebody ends up dying but by then the story had
gone in a different direction and she was returned to her life
she had used her story as it was using her.