Who's yelling?

Charlotte and I were just hanging out down here in the family room when I could hear shouting from upstairs. "Dad! Dad!" No crying, no sweet little voice saying "Daddy" (or hello, would it kill her to call for me?). Full on shouting. It cracked me up! So I open the door and Victoria is standing at the end of her crib, leaning toward the door and yelling "DAD!" It just made me have a little flash of sadness, of she's not a baby anymore. She is a big kid, and she has learned how to yell.