Just as your thought creates what you think. Perhaps, she likes the image of Hugh, and therefore applies some of that energy to a thought pattern that creates the image in her mind that she sees then. That was not one of your questions. Light, again I say, is an energy. Combined with elements, creates matter as a physical, biological, elemental form.
Thought starts the process.
The thought, hmmm hard, maybe, hmmm. Thought created ALL material things from the time of the origin, to the present, to the future. And, yes, its happening at once, but the oneness is in many different divisions. The latter is correct. Each time the experiment failed because of misdirected thought through, ultimately, fear.