Yeah she is really not enjoying what she's seeing, and her feelings on it are written pretty plainly on her face. The uncomfortable grimace only strengthens the more he explains.

She's tearing up now watching him tear up. Relieved to see him, to be speaking to him at all, but horrified to see what's become of him in the short time that he's been missing. "Steven... I'm so sorry, we should have never split up in the first place I-- I was just so worried about finding Lapis in time, and then I couldn't even do that right, and then I ran into those horrible, AWFUL little pixies--"