I'm a firm believer that the real Simms is mentally ill. Her clone spiralling so hard feels like some sort of window into the real one's thought processes, and how easily she is able to spiral until she can barely hold on. I believe all the clones show big pieces of how the originals are.
The clip at the end of the game - of the real Simms. It shows a COMPLETELY different person compared to what the others describe her as. Her eyes look very very dead and hollow. Poor girl is literally suffering, and she definitely can't ask for much help because Williams seems like the type to just have the doctors medicate her with no actual therapy, just so it doesn't take her away from her job.
More under cut.












