Screen Time reset issue on iPhone

My daughter (14) keeps turning the screen time. Screen Time is set up perfectly for my other two children (10 & 12). I can track their usage completely. Yet, when I go to check my oldest's screen time - it makes me set it back up; Password and everything. Only after I set it back up, I can view her usage.

I'm 32 years old, I'm very in-tune with technology, and I know I've set this up correctly. I've done extensive testing with my other children's devices and I cannot replicate this. I've also looked all over the internet to find "hacks" or "exploits," and I can't find anything. Yet, she has to be doing something. She even says " you can change the password if you want." like she knows something I don't. I change the password every time I have to set screen time back up, and all three of my children's passwords are different.

Has anyone else had this happen? Any suggestions besides taking away the phone? I'm worried about her sleep health.

Tl;dr Screen time on one of my daughter's phones is resetting back to set up.

[Re-Titled by Moderator]