Mara did not rush her. She had learned, over the autumn, how to stand beside Tess without stepping in front of her, and that morning the lesson felt as simple and as physical as keeping her hands in her pockets while Tess studied the wall. She noticed the snow first, of course, because Mara noticed weather the way other people noticed music, as something to move through. It had drifted against the base of the wall in a neat, uneven line, higher where the wind had pushed it into the corner and thinner where footprints had cut through it. In one place a small icicle hung from the top edge of the wall, catching light and throwing it back in a brief, bright point. Tess reached out, not quite touching the painted surface, and traced the shape of the tide pool in the air, following the curve she had imagined months before when the idea had still been only a sketch and a hope. Mara watched her sister's hand move and thought about how much steadier it looked now, not because Tess had stopped feeling nervous, but because she had learned that nervousness did not have to decide what she did next.
They came back in January, after a storm had left the town quiet and glittering, and again the wall was waiting for them, changed in small ways that only someone who loved it would notice. The paint had not peeled in any dramatic way. It had weathered the way a favourite coat weathers, growing a little softer at the seams, a little more itself. The blue of the water had deepened where rain and snowmelt had washed over it, and in the afternoon light it looked almost like real shallow water, the kind Tess loved to crouch beside at low tide. A few flakes were still falling, slow and unhurried, settling on Mara's shoulders and on Tess's dark hair, and for a while neither of them spoke. It was not an awkward silence. It was the kind of silence that belongs to sisters who have spent seventeen years learning each other's rhythms, who can stand side by side in cold air and not need to fill it. When they finally turned to walk home, Tess glanced back once, and Mara, without thinking about it, glanced back too, as if to make sure the wall would still be there in the morning. It would be. That was part of what winter was teaching them both: some things stayed, not by being protected from every storm, but by being made well enough, and cared for enough, to endure one.
February brought shorter days that still felt long in the school hallways, and the last stretch of hockey season arrived with its familiar mixture of tired muscles and bright, noisy bus rides. Mara's team played its final home game on a evening when the sky went pink early and the field lights came on against the dark, and Coach Delgado stood on the sideline with her hands in her coat pockets, calling out encouragement in a voice that managed to be both steady and warm. Mara ran hard, as she always did, but she found herself noticing different things now: the way a younger player on the bench watched the game with her stick across her knees, eager and a little uncertain; the way her teammates called to each other not just to win, but to keep each other steady; the way the cold air made her breath visible, small clouds that disappeared almost as soon as they formed. After the game, when the score had been settled and the handshakes done, Coach Delgado pulled Mara aside for a moment and told her, simply, that she had grown into someone younger players looked toward, not because she was the loudest, but because she stayed kind when the game got hard. Mara carried those words home like something warm in her pocket, and when she told Tess about them later, over mugs of tea at the kitchen table, Tess listened the way she always did, fully, without trying to fix or enlarge the moment.
Spring came to Greyhaven slowly, the way it always did, with mud on the paths and a tentative green along the edges of the harbour road. The snow along the base of the mural wall melted in patches, first into dark, damp stone and then into a clean, pale line where the sun had done its work. Tess and Mara visited again in March, on a day when the wind smelled faintly of rain, and found the mural changed again, not diminished but softened, as if the winter had taught it something about patience. The seaweed, which had looked almost black in December, showed hints of green and brown again in the spring light, and the hermit crab's shell caught a warmer tone, a small, rust-coloured surprise. Tess crouched, as she had done so many times beside real tide pools, and studied the anemone closely. Its centre still held the soft, coral pink she had mixed so carefully, and though the outer petals had lightened, the shape was unmistakably hers, unmistakably alive in the way a painting can be alive when someone has paid true attention to its subject. Mara stood a little behind her, holding both of their jackets when Tess took hers off to look more closely, and she thought about ladders again, not as a metaphor she had to repeat to herself, but as something her body now understood: you could hold steady, you could be present, and you did not have to climb for someone else to prove you loved them.