Selina noticed the look of disapproval she had earned form Sam, but she brushed it off and stood up a little bit straighter.
And before the scientist even had a chance to answer Selina did so for him, "Obviously he's a doctor , Sam. He and Eric were giving Kate stitches in my hut a little bit before we left there..." Selina said as if it were an obvious fact. Just how far she was off of the truth she didn't know. She was going purely on observation. Her instinct told her Eric wasn't a doctor, by any means, but this one had strong hands and a kind heart. Doctor stuff.
She then offered Sam a nudge as if to drive her point into its obvious state of reality.