"Ha!" He beams at her, absolutely pleased as punch that of all people, it's dear Harleen who agrees with him. She'd mentioned PTSD, after all, which meant that her own memories were nothing pleasant.

"Seriously, though, group therapy? In a situation like this? The only commonality is that we're assimilating memories. In a real group, you look for people with a common trauma or a shared behavior in need of correction. Alcoholics. Sex criminals. Abuse survivors!" He raises his eyebrows a little at Harleen, since he knows she works with the latter.

"What we all have in common is something that has so much variety within the definition that a group modality is absolutely useless. It's like having a group session about food allergies. You can talk to us all about avoiding peanuts, but that guy over there might only be allergic to strawberries. Or she can't eat gluten. You see?"