If you're running your own node you could consider doing something like this

nevent1qqst7eujks0d0len35wyjukr2zcx44n4jfzx08s2xfskknpykak9vacrrrhu0

Reckon it'll be a step by step process for your mum and something like getalby at first as a browser extension if she's using desktop is likely a fair enough first step.