If you are HN you know how to RTFM, I guess.

The Fix: Lock it Down:

Go to Settings > Screen Time.

Tap Turn On Screen Time (if not already on) and set it up for your child.

Tap Use Screen Time Passcode and create a passcode that the child doesn't know.

Go to Content & Privacy Restrictions (under Screen Time) and turn it on.

Tap Allowed Apps (to disable camera/other apps if needed) and Change Restrictions.

Under Content & Privacy Restrictions, find Date & Time Changes and set it to Don't Allow Changes or Require Password.

The problem with this is you’re creating a dichotomy. Some apps have good content that could be consumed indefinitely, which is beyond the scope of these controls.

Simplest example to point this out is if the parental controls only had things to limit phone usage generally without per app controls.

Yeah I just took it away from her and she no longer lashes out at me like a crack addict trying to bargain for her fix, that's been a much better move for both of us I've found.