Magic slammed into his body, sending him flying back from her. He rolled back to his feet in an instant, but his father had already reached her.
The second 'back' doesn't need to be there. This author has a habit of repeating words in two close-by sentences. It gets distracting and breaks immersion.
This book really needed better editing.
We're in a scene of dramatic revelation but multiple mistakes break immersion, ruining the impact.
