She barely remembers this incarnation of herself, though she does know so many other details. This one, she made herself forget about until it was time, until she needed to make this one jump to see herself, until she had to see them one last time.

"Who are you?" Mel asks, looking at her like she's a stranger.

River feels like one, here and now, even though she knows she's been here before - she's looking at the proof of that: herself.