Addie was mimicking me.
I could tell from the sound of her voice that she was telling Bertha to lay down and go night night. After she told Bertha to lay down and go night night, she asked her if she understood.
After I talk to Addie about something, I ask, "Addie, do you understand Mommy?".
There are times when she will answer "yes" and there are times when I get no response and so I reword what I am trying to say until Addie responds and lets me know that she understands.
After I get an affirmative answer from Addie, I say, "okay".