My mother catches me masturbating

He knew that the voracity of his desires was normal but he could not help but feel guilty at the idea of touching himself so many times, sometimes he could not manage to stop himself before getting that end that took him to the heaven of pleasure, the worst thing is that lately it happened in the least thought places and he had to move away from people to satiate his desires. That day it all happened in the family room and without hesitation he decided to please himself on the couch without shame and without knowing that his mother was behind the wall watching his every move, hesitant to confront him.