If anyone is still interested in my insights this is the sum total of mistakes we have made with Valerie:
We did not determine the nature of her abilities accurately.
We have seen it when she first appeared - we thought her power was mind control, mind domination, but instead it was more like removal of ability to do anything but what she commands you to do.
And this is the exact same mis-interpretation we have made with how she asserts her power over the world.
We were told to close our eyes and destroy our ears. We thought, or at least I thought, that her power was manifested thusly:
You can hear her, so she can affect you. You can see her, so she can affect you.
But instead it turned out to be:
She talks to you, therefore you are affected. She looks at you, therefore you are affected.