The OA Season 2: 12 Huge Questions That Must Be Answered
7. How Did Prairie Know About Hap's Secrets?
If Prairie's story is indeed real, then almost all of what she tells us - accepting its reality of course - fits together. She invites the group to imagine the story from her point of view, and that is almost exclusively how we see it.
One exception is when Homer is taken off on his own, but we can safely assume that he communicated this to her.
However, the one bit that doesn't fit is when Prairie talks about Hap meeting with and killing his former colleague, an event she was almost certainly never told about. Is this just a big sign the story isn't real? Or, if it is true, then how exactly did she know about it?