Moonspear he tests his might against what his eyes can't see

Hydra was watchful, and curious as to what he might do. Though she had helped to raise her own siblings, she found being a mother to be entirely different; she had always been wholly invested, and yet she wanted more. It was frustrating, though she understood, when they were not as advanced as she hoped them to be—but it was natural, too, given their ages. No one was born an expert, but she would work to have them become just that. They were finally coming to the age where all this was possible, though they were not quite there yet. 

So when Atlas turned to her, Hydra felt disappointed for but a moment (though it did not show, and the feeling passed quickly; he was quite young still, after all, and this was to be expected). The wind struck them both next, and as Atlas looked toward it so too did Hydra. And then he was moving; she knew then he had noted it, and she encouraged him with a low rumble as she kept to his rear, following with ease.