He was thankful for the steady hand, and offered up a small smile. Slightly awkward, but what about either twin wasn't just a little bit awkward? "She's doing better," he said. "Her leg's almost healed. She's still a little shaky on her feet, however. Thank you for asking." He appreciated the concern the other man showed despite how odd it must have been to have Rosalind living there for the time being.
Despite how aloof the scientist sometimes acted he still lamented over the fact that he was not able to do more to protect his sister. He was not a fighter in any sense of the word, and was a little on the sickly side (he was prone to nose bleeds, in his world and this). As alike as they were at least Rosalind did not have physical afflictions. She was training with Clint, and was attempting to do more outside of the lab. Robert had not even tried. Perhaps that should change, for his safety and hers.
He had started to walk away, but turned around and stuttered a bit to get Steve's attention. "Beg your pardon, Captain, but may I... may I ask you a question?"