Step son putting on good weight

My step son has been doing so well with staying sober. I was scared he was gonna relapse after his mom told him on the 4th she wanted to sign away her rights and making herself the victim of his sexual abuse that SHE allowed to happen. Ugh she pisses me off. But he still has been doing his best keeping sober. Guess he really wants that brother bear VHS lol. Another this is he is putting on very healthy weight. He was always very thin. But he was on drugs and drinking. Now he's getting a little chunky. I told him during breakfast he's getting a little chunky. He laughed and said he knows and I told him how good that is. It's a good sign of staying sober. I did make sure he understands hes gaining healthy weight and he looks healthy. He did tell me he feels better than he has in a while. I just wanted to give a good HEALTH update about him.