Why does the narrator scold her child?

From the text:

Our youngest, the little one, my baby, she turned from her father. Just overnight. He come in and she got scared‐looking, stiff, with her eyes wide, and then she begun to cry and try to hide behind me. She didn’t yet talk plain but she was saying over and over, “Make it go away! Make it go away!”

The look in his eyes; just for one moment, when he heard that. That’s what I don’t want‐ever to remember. That’s what I can’t forget. The look in his eyes looking at his own child.

I said to the child, “Shame on you, what’s got into you!” — scolding, but keeping her right up close to me at the same time, because I was frightened too. Frightened to shaking.