It's bigger than supporting her hobby. She's addicted to the phone, it's very clear, it drives her every action during the day. If her addiction was painting,

It's bigger than supporting her hobby. She's addicted to the phone, it's very clear, it drives her every action during the day. If her addiction was painting, and she had meltdowns from not finding her brush, or fighting with mom because she can't stay up late, her mom might have the same reaction. The author obviously wanted to allow for a balance but it quickly grew out of control to the point where the only thing that mattered was her phone. That's not healthy, and that's not failing to support her hobby.