User blog comment:Ygrain/Revisited: EDI and her purpose in the story/@comment-5287758-20121215162931/@comment-2228120-20121215164840

You nearly got me there :D

I'm basing this on EDI's own words that she would willingly risk nonexistence to stop the Reapers (at least in my playthrough; the very last talk before the final push, I think). I agree that there would be a lot of problems in implementing this solution but it can't be more difficult than merging human DNA with mechanic parts. And as to starbrat being superadvanced... meh :P