If she bought a gaming laptop specifically for work (this is the way you end up with a gaming laptop that’s not also your personal laptop) then it’s a silly, unnecessary, ill suited decision. There are other laptops with better battery life, cheaper, lighter, etc etc etc…. That fit the lawyer usecase better. Why would a lawyer buy a gaming laptop to lawyer?
IANAL but I don’t think you need discrete graphics for lawyer applications. But who knows, maybe she’s running an ML model locally to tell her what to do.