Creativity screen time way more then daughter has actually used

My daughter is worried that Simone has hacked her phone and is spying on her, because her screen time for her camera is showing 10-11 hours usage a day when she’s actually used no where near that amount, can someone enlighten me on why this could be? Has she been hacked? I’m really worried as she’s only 11 and I don’t have a clue how to check if she’s been hacked or how to fix it. Last month her calendar was hacked because she was receiving spam invites so I had to make her delete her calendar and now this, please help!