If you feel most familiar with Debian, I recommend looking at Mint. It has great compatibility and is otherwise easy to use, and it handles GPUs well (including Nvidia). In terms of hardware, I’ll agree with the others here–used is the way to go, you’ll get a lot more for your money than buying new.
That being said, you can also look for clearance and/or refurbished PCs. This one would probably be powerful enough.
There’s one other advantage to wireless here: a bionic prosthetic is moving a lot, and that’s not great for wire harnesses or connectors. Going wireless potentially allows for greater range of movement (or at least removes the engineering challenge of making it durable long term).
Damn, if she has any tech-savvy siblings, this would introduce a whole new level of “why are you hitting yourself”
Doubtful. Without Linux running the majority of the internet, I doubt the desktop scene would look the same as it does today.
Haha nope
The obvious answers are the games we endlessly replayed historically: Mario Kart, Goldeneye (VS mode), Halo (VS), Smash Bros.
If you specifically want ones on PC, I’d suggest Starcraft, Age of Empires, and probably Counter Strike (I wasn’t into that one, but it had a huge following).
Many board games fit the bill as well. Codenames (physical or online at horsepaste.com) comes to mind, and another commenter also mentioned chess.
Basically any games that were made before endlessly grinding became a thing (yep, that’s only been a thing for a decade or two).