Nature's Law

I sat there, staring.
Just staring.

The person staring back at me had changed.
Again.

The energy had drained out of her mossy green eyes and her fiery red hair had faded. It looked weak, straggly. Dead.
As if a gardener had forgotten to water a flower, all of the beauty was lost.

But the biggest, scariest, difference was to her face.
The skin was sallow and sickly white and her cheeks looked hollow and deflated.
Like balloons.

She stood up and smashed the sheet of glass in front of her as clear, crystal tears leaked out of her eyes.

I hated myself for doing this to her, but it was the law of nature.
So why does it feel so wrong?