Her first conscious experience is a weightless feeling, the muffled sound of wind, and the gnawing feeling that she's forgotten something terribly important. It's like waking up from deep sleep with all the world around her ablaze, except worse. Was she asleep? She feels like she'd been dreaming, but that's not right. It's sort of right, but it isn't, and she can't put any words to why. There's no before the not-dreaming, she doesn't know her name or who she is or what she even looks like. This... does not seem normal. Wait, that doesn't make sense, either. How does she have any idea what normal is when she doesn't remember anything at all? She doesn't understand. What is this thing she's in, why is there the sound of wind, why does her weight seem weird, why does she have a concept of what weight is and isn't weird, isn't that more strange than anything else?
And then the protective cocoon around her tears, and is ripped away, and many of her questions are answered. The ones that aren't are tabled for later, because she has bigger problems right now. Like falling out of the sky. Like that. Quite reasonably, her second conscious experience is panic. This does not seem like a problem she is equipped to solve. Knowledge from... somewhere... notes that this fall is not from the kind of height people survive, especially not someone completely unprepared. A confused amnesiac is probably even less equipped to handle it than the average person. This is so incredibly unfair.
She has enough practicality to flatten herself out to catch the wind. This buys her enough time to figure out that she has no kind of device, some parachute or propulsion system or something, to slow her own fall or catch enough wind to slow herself down enough. And then also to curse, or at least try to, because the ground is very close and she is out of time.
"Oh, fuc—" she begins, and then is cut off by crashing (painfully) into some kind of large glass dome. Ha, she thinks, through the pain and the confusion as she crashes through it, at least I beat the dome in resilience! This is an outrageously petty victory, but it's all she has.
Then she crashes into something else, and all she knows is pain and darkness.