OK, Aurora's not really talking, but she thinks she is! She is learning how to make new noises every day and has recently discovered how to vary the pitch and volume of her noises.
Yesterday, while visiting my mom, I showed her how Aurora reacts to tummy-time, expecting Aurora to start crying about it as she normally does. Instead she began squealing and squeaking in protest. Evidently she has realized that her sounds can be used to protest situations she doesn't like.
Last night she effectively practiced her protesting again. After nursing around 2am, I put her back down in her little bed, leaving her before she was completely asleep. Normally she falls asleep just fine. Last night she wanted to play instead. After talking quietly to herself for a few seconds, she got frustrated (I guess) with the lack of response from us, so she decided to make herself heard. She let out a yell that sounded like "hey!"--it was loud enough that Wil, who is a pretty sound sleeper, heard it. After that I picked her up and brought her to bed with us, where she wiggled a bit and then fell happily asleep snuggled next to her mommy.
Silly girl is certainly learning that other sounds besides crying get our attention.