Did she make him do that? Whoops... Not what she meant to do at all.

She runs after him, and catches up just in time to see him vomit. She stops short. Not out of disgust, but more because she knows that she herself prefers some distance when she's ill. When he stops, she approaches.

"I am sorry, monsieur. That was my fault. Shall we sit down a moment? Let your insides settle?"