The only thing Jessica Danforth truly loved was Derek. Her son was no good. It was obvious to everyone but her. Maybe she did know deep down and chose not to see it.
Wallace hated the little shit. He hated cleaning up his messes and keeping him safe.
Derek was destructive, selfish, spoilt and immature. If he had his way, he'd let the beekeeper kill him. He was right. Society would be better off.
But it would hurt Jessica too much. Losing him. Wallace cared about her. Enough that he was no longer loyal to his country, he cared about Jessica enough to keep her moronic offspring alive