Linux

i use mint as my first and im planning to get my mum on it too. its super user friendly

uBlue Bluefin or Aurora. Tested and approved. I moved my dad on Bluefin one year ago, no issues, it just works for his use case (90% of the time in a browser, light photo editing in Krita, some text editing). No maintenance, no updates, no actual knowledge needed as a daily user, just a single reboot once a week to boot the freshest system image.

And more importantly, it keeps on working despite his talent for fucking up every single piece of software he lays his hands on.

https://projectbluefin.io/

https://getaurora.dev/en

She is getting her masters in nursing online so it def needs to be able to accommodate that

Is there any specialist software she needs, or is it browser based?

Another vote for Mint.

Linux Mint is so nice.

I would turn off "Secure Boot" in BIOS before doing the upgrade.

It officially works, but can throw in unnecessary challenges - and Mom probably isn't traveling with national secrets next week anyway.

Depends from her hardware but generally Linux mint I install for everyone who is not familiar at all with linux.

Anything KDE. My mom and stepfather are using Kubuntu and it’s working out great.

Either Mint or Ubuntu. Both are gui and user friendly compared to Arch or Fedora imo

Mint is one of the best options for your mom. People switching from Windows to Linux are their main target if I remember correctly

I would choose Mint.

My suggestion is to install Ubuntu with whatever desktop environment works for her. Since you're using Ubuntu too, and you're essentially going to be her tech support, it'll just be easier all around to stay on the same distro at least for now.

More importantly, how Windows-centric is she? Some people may prefer Gnome since using it is just a bit less complicated to use without needing to set a bunch of different settings. But if she's expecting the Windows style start menus and such then maybe she'll prefer KDE. Or there's always installing Linux Mint's Cinnamon on Ubuntu, Cinnamon would be easier than KDE for a ex-Windows user I suspect (https://ubuntucinnamon.org/ also exists apparently).

Mint uses a outdated Desktop, Cinnemon, so wouldn't recommend Mint. A think you should choose a immutable distro like Fedora Silverblue och some of the Blufine disto.

Zorin or Mint.

Zorin is a bit more dumbed down, so there is no way for normal people to do anything wrong and a lot of things work just like they would expect them to. What really shocked me is when my dad downloaded some exe from the internet, double clicked it, installed and ran the software... No other distro supports that I think. On the other hand, when he had a specific wish, there was no way to change that, even though there are other distros/de's where I know you can. You mostly have to take it as it is given. Streamlined might be the appropriate word.

But mint is also very good for people that come from windows. No personal experience with it though.

Personally I prefer KDE over what my other two suggestions offer, but I've noticed that there is a lot of fiddling around involved when setting it up for specific personal preferences. If I do a fresh install, I have to go through all the kde apps and into their settings and change some behaviour here and there, which takes a whole weekend. I don't like the defaults, but at least everything can be configured to nearly perfectly suit me. But I would not want to do that for a relative, who is not tech-savy and patient enough to do it thenselves. Thats like a constant part-time tech support job.