It's begun. Emma's copies everything we say. Not just words, but short sentences, too. And she's got a really good memory, so it doesn't even have to be right after you say it, she can retain it for later. Example:
Yesterday I took something out of the freezer and something else fell out and hit the floor. I never even said a word because as soon as it hit, I heard this:
Apparently, she doesn't just remember, she knows when to use it to.