When he reached out, Elphaba took a step back instinctively. She didn't really think Fiyero would hurt her but it was a defense mechanism. People had never been gentle toward her. That was reserved for Nessa. Or Glinda. Certainly not Elphaba.
She stared at him for a full moment, unsure of what to do or how to react to him before realizing she had yet to answer his question. "I'm fine."