Casey is gone, Jane is pregnant, and Maura is there to pick up the pieces left behind.
There will be no miscarriage. Frost is alive. Jane and Maura have a baby together. That's it. That's the fic. Pure fluff.
Okay... not PURE fluff but mostly fluff with a lot of slowburn and a very, very short moment of pain to push the idiots in love together before turning in to the cutest domestic fluff.
Canon to a point and then AU.