Sometimes we don't know something but we know that we don't know it.
I don't know what is his intention, whether he intends good or bad. I should find out.
But sometimes we even don't know that we don't know. We are just empty-minded about the matter. We are behind the point where we start to consider it.
She ... on his intention. She is totally ... about it. Or maybe there are other ways to say that.
What is the word/term?