Thank you all for your replies! Let's see..
1) Because of DD1's allergies, I've been dairy, gluten, and soy free since before conception. I'm very well versed in the elimination diet, and so I immediately eliminated corn, nuts, eggs, and acidic foods as well. I can't bring myself to eliminate fish though. But if you see item 3, this does not "smack" of food allergies because she's fine the rest of the day.
2) She's been diaper-free since day 3. Though I'm glad you posted that article, because although she's been "on a diaper" not "in a diaper" most of the time, I still have no clue as to her readiness signs!!

(at least I've been cueing her when she does pee.) I definitely need to try to put her on the potty more (I even have all the EC "stuff" including a little potty bowl.) She poops only once every few days, but when she does, there does not appear to be a hint of a struggle to it.
3) All day, she does her nap/wake/nap/wake/nap/wake thing no problem. This extreme fussing happens always when I would expect her to be tired again, but for the last time of the day. She can only tolerate about an hour of awake time (except for fussy time...

). So after her last "nap" of the day, she's happy for about 45 min or so, then she fusses to nurse, which we do. She will only nurse a little bit, then begin her nightly fussing, as if the nursing caused the discomfort. I usually offer to nurse her about once every 1/2 hour during this time, and she usually refuses it until it's getting closer to 10:00, and then she will accept it again and often nurse to sleep. Then she sleeps very good until around 6:00 am (nursing only once or twice at night.)
Anyway, this seems somehow connected with her entire daily cycles, with the fussy time being before her long sleep. Does something happen to breastmilk in the evening? I know supply goes down, but that is not a problem here. I squirt milk all over the place!

Thanks for the ideas - keep them coming!
