Ever since reading it in my kids’ Bluey book: bumblenuts (context is, “g’day, bumblenuts!” following an introduction)

Doubtful. Without Linux running the majority of the internet, I doubt the desktop scene would look the same as it does today.

I’m not an expert, but any time I’ve needed to do this, I set up my own router as a client to the parent router, and I set my router (client) as the DMZ in the parent router. Effectively you end up with two routers that are both (more or less) connected directly to the internet, without the two networks messing with each other. It’s also minimally invasive to the parent router (even old stock firmware has always had a DMZ option).

The tricky part then is using the wireless connection as your “WAN port,” rather than a physical one. In which case, as long as you can install OpenWRT on it, you should be fine.

I’m really sorry to hear that. Sometimes life puts us in a place where we need our family, even if they’re awful.

That all sucks. To answer your question: decide whether you really have to deal with them forever. In this case, unless I’m missing something significant, it sounds like you could cut your brother and his family out of your life. It sounds like their contributions are exclusively negative, and after going behind you and your mother’s backs with the land thing, you’d be perfectly justified to cut them out.

In short: don’t deal with them.

Oh! And if she’s into puzzles, look at Islands of Insight. First person with puzzle solving as the main mechanic, but also some exploration and a bit of mystery to it.

I’d consider what kind of game she finds fun and compelling–that’s more likely to engage her to become familiar with the mouse/keyboard combo.

That being said, Minecraft on peaceful mode would fit and is generally approachable. Stardew Valley is pretty relaxed as well, though I don’t remember whether it uses WASD specifically.

No.