So how do you take care of updates and upgrades? There should have been at least 3 major dist upgrades required to keep her on security support since then and a

So how do you take care of updates and upgrades? There should have been at least 3 major dist upgrades required to keep her on security support since then and afaik back then Linux Mint offically didn't support major upgrades and suggested to do a clean install instead, which is defnintely not something I'd let my grandma do on her own.