I'm not so sure that this is entirely attributable to ADHD.
My DD did this when she was 8-11yo, too.
In her case, it was simply that there was more reward in NOT doing as she was told than in doing what she WAS being forced to do. Simple as that. Avoidance > working. Period.
Not hard to see that when you translate that power struggle into
Parents vs. Child in autonomy, it's also not going anywhere good.
She just shrugged about consequences. Literally.
You'll have to keep the spyware up, I am afraid. And grit your teeth as much as it takes. They eventually figure it out, but it's a rocky road until then.
