She tried to sum up what she had so far. "So no trauma, no vision issues, but headache and dizziness. Bad enough that someone else noticed." A pursing of her lips. "I think I'll have to ask you to stay here for a little while, while we run some more tests."

She hoped she wouldn't have to run down a list of what it might be, to try and scare Rachel into staying. A head injury bad enough that she couldn't remember getting it, some sort of malfunction in a XaXing memory-selling transaction, a virus or other contaminant affecting the brain and the inner ear, experimenting with some newly purchased cognition-enhancing drug.