Curious why not just ask her or even why get involved at all since it's not an area of immediate and direct deep expertise?
Laptops differ in their tradeoffs and better and worse sets of tradeoffs vary by individual. I love the Dell Precision M7510 I currently have and I loved the Thinkpad X series it replaced as my daily driver and between them are two very very different sets of tradeoffs.
The 7510 probably will not meet the tradeoffs of most people. It is heavy and has mediocre battery life. On the other hand, it can be had with more CPU than most desktops and ECC RAM and a fair amount of GPU and a lot of screen. Conversely, a ThinkPad X series is small and light and sips battery while still being reasonably powerful.
Laptops differ in their tradeoffs and better and worse sets of tradeoffs vary by individual. I love the Dell Precision M7510 I currently have and I loved the Thinkpad X series it replaced as my daily driver and between them are two very very different sets of tradeoffs.