Did she just say that?

Pete has been cooing with Alexis and he says "boo" to her and tonight in a very clear reply back to Daddy she said "boo"!!! I'm so loving the cooing and how she will mimic you when you stick out your tongue, so cute. She looks like she has something really important to say when she is trying to coo. So precious and I'm trying to enjoy it even more as she will be my last.