I really need help before 2:30am What change do we see in this paragraph? How is it different.

We go into the hall, where my mother kneels down to me. Her lips are
quivering, "I'll be back to pick you up at twelve o'clock. I don't want you to go
nowhere. You just wait right here. And listen to every word she say." I touch
her lips and press them together. It is an old, old game between us. She puts my
hand down at my side, which is not part of the game. She stands and looks a
second at the teacher, then she turns and walks away. I see where she has
darned one of her socks the night before. Her shoes make loud sounds in the
hall. She passes through the doors and I can still hear the loud sounds of her
shoes. And even when the teacher turns me toward the classrooms and I hear
what must be the singing and talking of all the children in the world, I can still
hear my mother's footsteps above it all.