So the challenge you describe interns of boundaries is pretty normal for that age group. Children test the parents the most and it can be waring because it’s not fun to be the bad guy. They actually learn a lot during this testing period and they may not consciously know they are testing. It’s a part of development and it’s important to understand that their brain isn’t fully developed so their reasoning lacks due to that frontal lobe that doesn’t fully develop until around age 25.
These are definitely challenging years.