Read this short excerpt? (My Story)?

The stone surface was like ice beneath her feet, but Katia could not feel it. Even the bitter air failed to break through to her senses. She had felt the throbbing pain and then the boiling anger, but that had all simmered away, leaving an emptiness behind.
She had been hallowed out. Every emotion tucked away; every sense far from reach.
She was numb.
She no longer felt the sting along her cheeks where tears had stained them. Her eyes, still puffy but no longer aching, began tracing the cracks along the stone walls, twisting and bending on and on. These people had broken her, like the withered walls of their dungeon. She had felt the tumbling of her own walls, the rush as her pieces crumbled beneath her. Now all that remained was the damage left behind; the cracked surface.
She had barely realized the man had stopped, when he shot his hand out in front of her.
"Wait here," he grunted, plopping his torch in a holder just outside a small wooden door. He then pushed it open; rusty hinges refusing to keep silent. She had almost reacted to the thud of the closing door, but not quite.
She stood there in a heap of silence, allowing the damp air to settle against her skin; allowing the silence to fill her up. The darkness was pressing in on her, like the tides against a ship lost at sea. The darkness was more alive than she was.
Something moved beyond the flickering of the torch, but she didn't even raise her eyes from the wall – did it really matter? A creature could have slithered from the shadows and ripped her throat out at that moment – just because she hadn't been ready for the strike. Would she have defended herself? Katia wondered if this numbness would get her killed. She wondered if she cared.

Katia's world has been shattered. She's now numb. The reader will see this play out in the chapters to come but I need a good way to introduce it. Katia's way of thinking, talking, reacting has changed dramatically compared to the beginning. So I needed something to lead the readers into this change. Does this introduce it well? Should I make it stronger? Constructive criticism is welcomed and appreciated, as always. Riiight. (;