Selfish Reasons

Sunny contemplated his answer for a few moments, then said neutrally:

"I guess it's the same as yours."

Cassie seemed a little surprised. 

"The same as mine?"

He nodded and glanced at her with hidden worry. They were climbing a slope of stone debris, the surface under their feet treacherous and uneven. Cassie seemed to be doing fine, but her movements were a little stiff. 

No matter how well she had learned to live with her Flaw, she was still blind. Sharing other people's perception or sensing a few seconds into the future could not entirely replace sight. However, Sunny could not think of a way to support her on this treacherous slope — he could offer her his hand, but he doubted that she would accept it. They were not that close... now. 

In the end, he did nothing.