What's happening here is incredibly complex.
She is fame hungry and I would imagine she always has been with her history of the pop star stalking, people who usually crave fame want to meet famous people too.
She's very lazy, so this "job" (it's not a job) gives her easy money while allowing her to do not very much for it, while at the same time she is succeeding in kidding herself that it allows her to be there more for her kids. But in reality she's in the bath at 5pm and on the sofa watching Netflix by 6pm, pissed and talking to her phone.
Add to all of this her constant need for attention, adoration and validation and she is caught in a downward spiral. It gives her everything she is addicted to, no matter how bad it all is for her Mental and Physical Health.
She'll never learn and she'll never quit.
It's far easier for her to stay fat, lazy, greedy and selfish than it is for her to face the damage its all doing.