That energy carries into Episode 4, when Robby asks Al-Hashimi if she's reconsidering her bet on the Westbridge situation fueling an influx of patients to PTMC. And as night shift charge nurse Lena revealed during an exposition dump in the Season 2 opener, Al-Hashimi is also a single mom. "We'll have to see," Gemmill tells TVLine of their dynamic. "During the testing process, we read a few mock scenes — some variations that ended up in the scripts, and some that didn't," Moafi tells TVLine, referring to early chemistry reads with Noah Wyle. "Throughout the season, you'll see them harmonize better, more seamlessly together," Moafi says.