Newsflash! After another evening of miserable, tense crying, Katrina slept from about 10:30pm to 5:30am! Then nursed and went right back to sleep until 8:30am. I know better than to think this will persist, but it was a welcome relief.
However, if I'm following Babywise, which I sort of am, then I actually shouldn't let her sleep more than five hours at night. According to that book, a breastfed baby needs to eat more often and more frequent nursing is necessary for proper lactation.
Still, I wasn't about to set an alarm. I've never been very good at book learning.