Linux mint is a good, “click first” distro that won’t break without root + will be easy for her to use. For something with a more modern desktop and more recent updates, Bazzite is really good at just working and (in my experience) has never broken
Xfce next major release will have Wayland support so no need to even change!
Debian can be pretty light/small on a clean install and xfce should run fine on 2gb. Although the biggest thing is gonna be if the laptop has fast storage or not. Since its a celeron it might not be upgradeable, and if it doesnt already have an SSD any desktop will feel slow
Personally if I really wanted to squeeze all the performance I could for web browsing I’d go with minimal Debian and RiverWM but thats a bit more involved
In a similar vein I really miss rainmeter, now I’ve gone down the deep rabbit hole of EWW and AGS but rainmeter was way easier
Top premitted domain: e621.net
A fellow sysadmin furry I see