"He'd been unconscious for days. It was like he was in complete darkness." As she says darkness, the entire yellow dust disappears, plunging the entire place into sudden darkness again.
"And when his eyes finally opened, he saw the brightest and most beautiful light he had ever seen. He saw Vikka." At her words, the yellow dust returns, forming the figures of the dark magician, Vikka and every other person and thing. Brightening up the place again.
"Finally I get to see your eyes. I told them I could save you. I'm glad I did. She had smiled and as she spoke, her tired eyes closed and her weak body fell into his arms, but it took a while before the smile faded from her face. She was indeed happy she saved him."
I think this is the trouble the old woman is talking about because just looking at the hologram of the dark magician holding Vikka in his arms, I can read every expression on his face. At least I want to try and read the expressions on his face.