A "nevus" is normally known as a mole. In anatomy, the scapular region is known as the shoulder blade ( the bone that connects the humerus with the clavicle- picture attached).
The procedure she had it done was a simple surgical excision. The nevus is cut down and the skin near it, is stiched, leaving a small scar.
Most of the times, the reason to remove a large nevus is preventing from melanoma risk. However, many patients choose to have them removed due to aesthetic reasons.