Her dreams are, not to put to fine a point on it, alien.
She dreams of flying through endless caverns carved through red rock, merging and weaving with a swarm of other people in an intricate dance. Sometimes the people are flowers, or abstract geometric shapes, or completely invisible and present only through their mind-impressions. Sometimes the people are angry, or joyful. Discordant or unified. The emotions of the swarm that she dances in shift and roll in time with their movements through the endless caverns.
The colors are strange, as well — she can tell that the rock is red, but 'red' feels like warmth, and like home, and like the taste of iron on her tongue. The forms of her swarmmates favor bright, eye-popping colors, sometimes forming bands or gradients that morph and change as the swarm flows around corners, like water. The colors taste of thoughts, and the thoughts sound like a chorus, echoing from the red stone walls and bringing back an impression of the shape, now smooth and twisting, now rough and dusty. The swarm knows where it is and how it is moving, and so she knows where she is and how she is moving, even as she is pulled through the dream-dance.
The whole thing, for all its strangeness, follows the familiar structure of an album: there is an overture, of sorts, a hint at what is to come; then comes the main tracks, different variations on the core experience that follow each other with brief stretches of unadorned cavern to separate them; then the thing builds to a crescendo. Tunnels merge, and more and more minds flow to join the swarm, until she is surrounded by an ocean of emotion, repeating and echoing and remembering the themes that led to this moment.
Together, they surge through a cavern that opens wider and wider, until they crest like a wave over the yellow dunes and white frosts of the surface, sun streaming past their bodies and painting intricate, shifting patterns of shadow and light on the ground far below.
And then there's an outro, as the swarm settles to the ground, people returning to their normal forms. Topaz is surrounded by a sea of green and white that slowly separates out into a Tao-shape. Around her, the dream-minds think back to their flight through the tunnel, reprising different parts, even as they slowly blink and blur and fade until she is alone again in her head.
... and she has to pee.