I've got some excerpts from Rey's canon/notes in the links, but I can always provide more context to the scene both in the thread itself or we can hash things out OOCly. Ravine's is a little shakier because her canon isn't fully written like Rey's, so I'll give a general description like all the other kids on the block and draw from that.

Rey
- tw: sexual assault/implications. Memories of Dr. Johnathan Quayle, the man who resulted in the death of Rey's "mother" (creator) and abducted Rey for half a year while she was in a doll-like state.
- Undine's death in general makes for a not very fun time.
- Her past selves, including Schmidt, Sheridan, Safronov, Schuyler, and Stone.
- Faye Faye Faye. Getting the shit beaten out of by Faye. Kissing Faye. Snuggling Faye. Getting stabbed by Faye. Yeah, Rey's "relationship" with this woman is pretty messed up.
- Night at the opera with her brother, Orion.

Ravine
- Being alive as Yehudit, a child on the streets of ancient Jerusalem.
- Becoming a diviner in Babylon, after being deported in wake of the siege of her homeland. Any of these scenes could range from her time alive and her service to King Nebuchadnezzar II, who was a pretty all right dude. The gardens are a pretty scene.
- Her death, having temporarily "compelled" a Babylonian soldier into beheading her as she was running towards the Ishtar Gate.
- After dying and becoming the reaper, Ravine.
- Meeting Elizabeth, an English girl who had sailed to the American colonies during the 1600s. She was a gifted human (or "esper") who could see the dead, including reapers such as Ravine. They grew a fast bond, Ravine lingering around her as she grew older.
- Watching Elizabeth die from typhoid fever, while Ravine lay beside her on her bed waiting to reap her soul. Elizabeth's soul would instead be stolen and sacrificed to the Emanation of Death by another reaper set on the task that Ravine was unwilling to complete.
- Wandering a dead world for hundreds of years in solitude.