Nensu allowed Recovery Girl to tend to the other teen's wounds, even though the girl wasn't allowed to stick around, as soon as she started working on the procedure. So she was forced to wait in the chair, near the woman's desk. It took some time for her to register on what happened, as well as the fact that both the Endeavor and Loma were responsible for putting Midoriya in danger. Not only is Nensu eventually figuring out that the other teen had taken extreme measures to help her take control, but then she felt guilty for allowing her rise in the first place. Now, if only she should have been stronger in holding back her malevolent counterpart when the number two hero made his presence known. 
It was, from that point, that she wanted Midoriya to be safe, and not have to endure that nightmare again. 
Eventually, Recovery Girl came out from behind the curtain, and back to her chair. To hear those news, Nensu finally released the breath that she had been holding in, and looked down at her feet, towards her white boots. 
The worst case scenario wouldn't look so desirable. [i]'He could have been killed'[/i], she thought, as she took the gummy from her. She just held it in her hand, not feeling the need to eat it immediately. "Is he going to be okay?", she asked, worried and empathetic for Midoriya's wellbeing.