Serena shook in his arms and said weakly “I’ll...try...it’s really hard...to stay awake...he tried to...drain me...I couldn’t....” she laid her head against his shoulder, her eyes fighting to stay open. 
John was thinking over his last words and said “without knowing names I can’t be sure...but we will figure it out. And we saved the day, and ms Serena so that is what matters right now...” he turned to look at Chas and saw how messed up Serena was. 

Serena was barely awake and shaking badly now. John rested a hand on her cheek and muttered “that was brave trying to hold him off on your own...that shoulder needs looking at as well...let’s go home. Kay? You alright?” He looked over at her, a little in awe from what he had seen her pull off in a short time.