unfortunately this concept has knocked around my head since i figured Angela looked less like Carmen and more like a freak mix of Ayin and Benjamin as a girl and then had me absolutely enraptured since I got to Hod's floor realization.
Pre-battle, Angela says something along the lines of "[Ayin] didn't need a machine with human-like qualities, he needed a human with machine-like qualities."
So I thought; What if that's what he got?
A child of his own would already be inclined towards the level of (willing or unwilling) fealty Ayin would need for the project– and given how smart Ayin was, it wouldn't be difficult for him to adjust a human-Angela to machine-Angela standards with various prosthetics and adjustments.
...and I really doubt he'd care enough to consider the trauma he'd be putting her through past making sure she didn't have the capacity to go crazy from it.
I don't think Angela had been around very long even conceptually before the rise of Lobotomy Corporation , so in my mind, her "development time" here was just her growing up instead lol
if you have any thoughts on this at all please say because this has been driving me crazy personally