Baz wrote:Also, my suspicion is that the reason she started falling apart at the end was because her "Rei" ego was disintegrating due to her new-found awareness of Lilith's soul within her, and not because of anything else. In addition, this was something that both Gendo and Fuyutsuki knew was going to happen eventually and it was one of the inevitable causes of the third impact. A counter-argument to this is that Kaworu wasn't falling apart, but we don't really know when he was awakened to his SoL identity. Hmm. Or maybe he just had no attention of falling apart until he found his original body.
I still don't think the meds, or lack of meds, had anything to do with her falling apart.
Plotwise the pills are a good explanation for Rei's decomposition. We can then interpret that because of her rebellion against Gendo, she stopped being a good girl and didn't take the pills anymore.