What does Mama do when Liesel leaves to the wooden spoons?

Mama spanks Liesel with the wooden spoon.

Rosa came closer. This was not a good sign. She was very close to the wooden spoons. “You what?”
Before she could answer, the wooden spoon came down on Liesel Meminger’s body like the gait of God. Red marks like footprints, and they burned. From the floor, when it was over, the girl actually looked up and explained.
There was pulse and yellow light, all together. Her eyes blinked. “I mailed my letters.”