It only takes two to mesh… literally. The problem is connecting her local mesh to at least one peer with free access to the internet. Because right now a local mesh can’t do much more than host some multiplayer games, not because of infrastructure but because of the permissioned protocols our beloved applications use. This is why we need p2p mode on nostr and things to work without pinging back into centralized systems like DNS just in general. Take ZeroNet for instance, once a website is accessed by a node it becomes a seeder of that very site, so it still works even in the event of being disconnected from the rest of the internet. Unfortunately zeronet has some other flaws as was abandoned, but that’s exactly the sort of thing that is needed when communications with the rest of the network is restricted/bottlecapped/etc.

As for the physical connection, fips, yggdrasil, cjdns etc. are medium agnostic so you can use anything. wired Ethernet or WiFi direct between your neighbors? Sure. A lorawan peering? Np. Long distance laser or actual fiber from legacy ISPs and peering from an IX? Also good. The hardest part is getting people onboard to peer with you, both inside and outside the jurisdiction, who are willing to bust the sanctions.