I saw it... It was an accident, not a necessity. I was asking Mom if she wanted lunch, and when I opened the door, I heard a strange sound. To me, Mom is a close female. Usually strict, but when I suddenly opened the door, she was in the middle of masturbating. She was masturbating with her own fingers and a vibrator. "Mom was sexually frustrated..." I was surprised, but I started to scold her and help her with masturbation...