I've read your assessment more times than I care to admit, and there's one part I don't know whether I agree with.
I think he may have a degree of charm rather than having mommy issues. Women are disappearing from public places without a single witness. No screaming, nobody intervening, etc. I think if it's one person, he's managing to lure them to an isolated area. Nobody (that I know of) disappeared from a private area, and public areas have so many variables. Other people, security cameras, etc. I think he's getting their willing cooperation at first.