Mellodii, after knowing him for at least ten months or a year, would say stuff like-
"Are you comfortable with talking about your injuries?"
"I myself have never undergone serious injury, so I cannot speak with certainty that I can fully sympathize with you."
"What sort of injury is it?"
"For how much time were you hospitalized? Did they treat you nicely there?"
"Did the accident harm people close to you?" (would immediately launch into an apology when hearing the answer, and leave the topic completely, if not the conversation as a whole).