The woman in the shadows

I am a woman trapped in the shadows
Looking for the perfect life form
Hoping you will come along
So we can switch our souls to new bodies
Mine by choose and yours not
Don't worry my child
Its only darkness
The light is where I need to be
To thrive and see
I sit still
In this picture frame
Appearing to be harmless
As I possibly can
But one day
It will happen
Where I will be the one
Staring at you
In your old
Picture frame