[@Spiffy] I'm a little confused how she'd be visible to any observer. I mean... if she was hit by a whole lot of dust, the dust would simply turn invisible along with her because she's keeping the light from her physical body and all on it, though depending on her reflexes that would possibly mean there'd be an unnatural oval emptiness in it if she can't adapt. If she's hit by anything bigger, then they'd be unnaturally stopped, yes, potentially making it clear to an observer that someone's there depending on the circumstances, but she wouldn't become visible unless she somehow lost control.

But, anyways. Acknowledged. Then I know what I wanted to know. Thank you.