For thousands of years, Morpheus had been able to feel minds, especially when they were sleeping, and especially when they belonged to people--and deities--he cared about. He knew the boundaries of their dreams like they were well-traveled roads, knew their sleep cycles like they were his own breath patterns, knew the forms they wanted to see when they shut their eyes...
So when one of those minds he so loved vanished, Morpheus not only felt it, but he took it personally. One moment, Nanshe had been sleeping, in his rooms, with him. His back had been turned--he was, as usually, not sleeping and working on some stories to use the following day as the town storyteller. Her chest rose and fell, and Morpheus worked contentedly, very focused, weaving dreams for Nanshe and others as he did so.
Then, as if she'd never been there, Nanshe was gone.
He felt it first, before he could bring himself to turn around and check if she was still there. He felt her mind cut off from him, felt the Dream Plane close in on itself and go dark, like a candle being snuffed out.
Everything inside of him went still, and he felt for her, felt for their bond, and their sameness. He closed his eyes to shut everything else out and reached for her. He could feel his brothers distantly, but not Nanshe.
Not his mirror.
Slowly, Morpheus turned from the desk he sat at to the bed behind him. He was not surprised to learn she was not there, but he was surprised to see that the bed didn't even look like she'd ever been in it.
He began to scowl. His mind reached more and more feverishly for her, and the pieces of him immersed in the Dream Plane became more and more frantic as they searched the minds of others for her.
There was no trace among anyone here. Or among his brothers.
Morpheus didn't realize it, but he'd fallen to his knees at some point during this, and was surprised now to see that he was mostly on the floor. The look in his eyes grew darker and darker until there was very little humor left in his expression, and as he got to his feet, Morpheus pulled all versions of himself from dreams back into him.
And then he went a little further, and pulled on his brothers.
Even Phoebetor, who he could not feel entirely, only distantly. He pulled until it hurt, until it felt like something inside him was sick and bleeding.
And when he got to his feet, Morpheus was surprised to see that he had put his hand through his front window.
He didn't feel it. Or much of anything.