This may be premature, but it looks like Butterfly is finally settling into a routine. For real this time. Introducing baby food has been the best thing for all of us. She now nurses, then eats baby food maybe an hour later, then takes a nap. The crying is so greatly reduced and my stress level is much lower too. Even better, she is sleeping in her crib at night! She goes right to sleep when I lay her down. However, during the day she is still in her car seat. It seems that it has to be dark for her to get the message to sleep in her crib. So for now we're still rocking the car seat. I just buckle the top part so she can't do something crazy like turn over or fall out. Also, and this will sound bad, but I stick her in my closet. It is dark and quiet in there and she sleeps for a good hour and a half. Again, I think the darkness is her cue to sleep. So I have no idea what we will do when she is truly too big for the car seat. But I'm not worrying about that now.
Now that I've posted this, she is sure to do a complete turnaround and wail for 24 hours straight.