This movie left me feeling a little haunted by my own young adulthood.
Looking for resolutions, meanings, and even stories in hallucinations and fractured relationships is a frustrating business. I've tried.
I have to look at a movie like this as a portrait. Much as we can represent three dimensions as a two dimensionel painting or photograph, we can infuse a single timescape across a moving picture, everything existing at once in the storyteller's imagination.
My own experiences with hallucinations and psychosis are not arranged in my memories in any sort of linear fashion. They are off the normal timeline in a way that doesn't recede into the past or is unknowable in the future, especially the emotional aspects. The most crippling incidents have the emotional aspects of dreadful deja vu or recurring nightmares.
I arranged my memories of this movie in a similar fashion (but not on my own personal timeline) so maybe it effectively conveyed to me the nature of the character's illness., which may or may not represent any common forms of epilepsy.
It's also possible I've projected too much of my own baggage onto this film.
In any case, brain illnesses and injuries are no fun, and it's always wise to be wary of fiction about "damaged" women authored by men.