If he doesn't take action now, it's simply because he sees five Elite Initial Stage Grafting Demons, can't be bothered to bustle, and lets Evelyn Walker do it herself.
He simply plays the part of a bystander, benefiting from collecting materials.
But for a very long time, Evelyn Walker was silent, said nothing, and Gary Smith looked at the jumping Bob Chandler, puzzled, "I not saving him is normal, but aren't you relatives?"
"Correct, but..." Evelyn Walker raised her head and weakly said, "You said he was the enemy, so I won't act. I'll wait until he dies and collect his corpse. I'll tell my uncle at that time that I saw death without saving."
The expression was weak, but a pair of amber eyes staring at Gary Smith, there was an indescribable persistence in them.
Gary Smith looked deeply at her. Even if several Grafting Demons were already close to Bob Chandler, she didn't intend to take up her weapons.
In other words...
She is serious!