Hermione was more anxious than nervous. Then again, she was usually anxious, so this was nothing new. She wanted so badly for Ron to have the medical attention he needed, so she was simultaneously glad that he was getting it and anxious to find out how this was going to go. Her guards were up for sure. She hadn't been about to let Ron head off on his own for this, not when his physical state made him vulnerable. She knew he was more than capable of caring for himself, but no one really had control over how their injuries inhibited them.
She nodded as he got to his feet and stepped to his side to slip her hand in his, holding her other hand out for invisible Harry to take so that they could Disapparate. "Ready whenever you two are."