Partial success? There's been no sidewalk shits since my last update, but "poop time" is still a complete failure. I just don't take her out of the courtyard unless she shits, and I take her out every time she shits. Obviously, that doesn't always match up with when I want to take her out. But there's been a couple indicators that something may have sunk in, separate from the other efforts. Twice now, after the original crap and going out, we've returned home through the courtyard where she's promptly crap (on one outing, 2 separate times!). So I hope that means on those walks home, she could've sidewalk-crap, but chose not to.
I still don't have any idea when I can know anything's been accomplished to where I can go out w/her even if she doesn't crap first, and know that she won't sidewalk-crap and put us back at square 1.