The third moon was in December, and it brought with it something none of them had expected.
The change itself had gotten easier — or rather, she had gotten better at it, which was a different thing but felt the same. The pain was still pain, but she understood it now, understood the direction of it, could breathe through the specific pressure and heat of bones reshaping with something approaching competence. It was like learning to swim: not painless, but no longer drowning.
The unexpected thing happened two days before the full moon, in the school bathroom, on a Wednesday.
She was at the sink washing her hands, and she was alone, and she happened to glance up at the mirror, and for a moment — half a second, less — she saw two faces.
Her own face, the face she'd been growing into. And behind it, overlaid, the face from before: rounder, softer, the face that had been in every school photo since sixth grade. The face that her mother had been looking at across the breakfast table for sixteen years. The face that Dom had almost kissed in a party kitchen.
It was not a supernatural vision. It was her mind. Her mind processing a grief she had not yet acknowledged.
Because here was the truth she had been stepping around: even when the change was right, even when the truth of it was undeniable, the person she had been was still a person. She had been Mara Vasquez, dark-haired, dark-eyed, sixteen, who had a best friend named Jess and a grandmother who smelled of candles and a mother with careful hands. She had not been a fiction, even if some of what she'd been told about herself had been incomplete. She had been real, and she had been loved, and what was changing was not removing anything that had been real — but it was changing.
Things change and they don't un-change, and this is called grief, even when what you are changing into is more right. Even when the change is the best possible change. Grief does not require that something be bad. It only requires that something be different.
She stood at the sink and let herself feel it, the full weight of it, for about ninety seconds, and then she dried her hands and went back to class.
That evening she called Rook.
"I saw my old face today," she said. "In the mirror. Both faces at once."
A pause. "How did it feel?"
"Like a goodbye I wasn't ready for."
Another pause. "Yeah," he said quietly. "That's the one nobody warns you about."
"Did it happen to you?"
He was quiet for a moment. Rook spoke rarely about his own transformation, she'd noticed. Not defensively, not guardedly — just in the way of someone who processes internally and only shares what he's fully sorted. "Yes," he said. "Third moon for me too."
"What did you do?"
"I wrote it all down. Everything I remembered about who I'd been. Everything I wanted to carry forward." He paused. "Not as a rejection of the change. As a — as a list of what I was keeping."
She thought about that. "What did you keep?"
"Almost everything that mattered," he said. "The people. The memories. The feelings. The things I'd learned." Another pause. "I lost a few things that I would have chosen to keep if I'd been asked. Some relationships that couldn't hold what I became. But those weren't losses I caused. Those were losses that were already coming."
"I'm scared about my mom," she said.
"I know."
"I'm scared she'll look at me one day and not recognize me."
"Mara." He said her name with the care of someone choosing words. "I've met your mother. I've smelled your mother. From the other side of your front door, I can tell you: she is not going to stop recognizing you. She might need time to learn the new version of you. That's different from not recognizing you."
She sat with that.
"Are there people who don't come through it?" she asked. "The change. The — all of this. Are there people who lose everything?"
"Rarely," he said. "And usually it's not the people who are asking that question."
"Why?"
"Because asking the question means you're thinking about what you want to hold onto. And wanting to hold on to things means you have things worth keeping." He paused. "Go write your list."
She wrote it. It took three hours and filled twelve pages and she felt, when she was done, like she had just carried something very heavy for a very long distance and set it down.