Thankfully my mum doesn't really use her laptop much, mainly for going on Amazon or ordering her groceries. Stuff like that. She asks me questions about her phone a lot. I don't even remember what phone she has. I just have to take educated guesses by using mine as a baseline. I guess cause I'm the oldest by like 20 years and have like 4 computers and a lot of gaming tech, she just assumed I know what I'm doing. Haha.
Glad your mum is becoming sceptical of things online. Definitely better to be over sceptical with technology these days. I've shifted to Linux on everything, except my old ass MacBook which is almost dead. Too many companies out there trying to steal data and personal info now.