Seeing enough drone Tessa(s) made me realize something. I could totally put the trauma from Fallout Equestria: Project Horizons into this.
The fear of "Am I still me?"
The part about "I don't deserve this, others should have survived instead" (Probably not as much of this, maybe she feels a bit bad about her family but that's beside the point)
The LACK OF A HEARTBEAT. THE LACK OF TRUE BREATH. Do the drones have endurance? Can they truly get "tired"? If not add the "I can no longer feel tired, I can no longer sweat, I can no longer scream till my lungs give out to it as well. Also the fact she can no longer actually feel tears if she cries. Or cry tears in general. Or eat food. Real food. Or taste... I think? Maybe they can taste? I dunno.
"They keep on telling me to sleep, but I don't need to sleep because I'm a robot now, my brain runs on oil and I don't need to sleep"
I'm overqualified on Drone Tessa trauma.
Also Tessa's chest wouldn't rise and fall when she breaths so it would disorient her by the lack of up and down motion from breathing