Proton serves privacy, not anonymity. They will not collect, harvest, analyse or sell your data. If you however use their services for illegal things they will forward whatever - usually little - unencrypted information they have about you.

You can always compile from scratch, compare the checksums or use the version you compiled. In projects this large people usually do this, and there’s a certain level of trust that these checks have been performed.

Mint looks quite similar, and if she asks “Microsoft applied an update and now the start menu looks different.”

If all she does is browse the internet and read emails, she’ll never know the difference. You could even set up the splash screen to display the Windows logo or just disable it all together.

Wikipedia itself is pretty great, the company and its marketing behind it, not so much.
https://www.dailydot.com/debug/wikipedia-endownemnt-fundraising/

As soon as you leave the city though, you’re having a problem. Bicycle infrastructure is basically non-existent, cars heavily impeding buses - at least where I live - which delays them all the time and centralised bus hubs, which means that you always have to go to the bus hub first, change bus lines and then go to your destination.

This is also my biggest problem with the metro in Oslo. If you live slightly outside of Oslo but still along the metro line, the only way to travel perpendicular to the metro lines is often to take the metro towards the city, change lines and go back almost the same direction you came from.