SHE DID IT!!!
I will have to write about it tomorrow, because I have no idea if she woke up since I put her down (with 40 min of hysteria) again at 11:17. I think maybe once - vague recollection - but I doubt there was more hysteria.
I'm unfortunately awake anyway (at 5:17 am), with one engorged boob. But that's ok!!
Baby girl has an incredibly runny nose right now, so I thought about giving up and just starting sleep training over in a week when she's healthy. But The Hottest Computer Scientist in the Universe said we should persevere.
And she's still asleep!!!
ADDENDUM: she woke up at 5:55. I went in right away and nursed her, she drank a lot then went back in her crib without a fuss. I put her down & she rolled over and slept. When she woke again at 7:30 or 8, I brought her to our bed for nursing&sleeping. It's 9am and they are both asleep. I gotta finish these Cinnamon Rolls for Easter brunch.