why does someone always come out with "what if she dies?"
my dad is dead but that doesn't mean he wasn't a right pain in the arse sometimes and believe me, I do not miss those times.
With someone this age, I would stop enabling her. She can learn. If she doesn't want to bank online fair enough, but she should manage her own stuff.
My mum is 83. She went on a course for seniors to learn computers - she had almost no experience. She went on this at about 75 I think. She won't use a smartphone - arthritic hands - but she uses a tablet to watch lectures and things online. It's great, she finds lots of old nostalgic TV on YouTube as well. She is very pleased that she learned.
She won't bank or shop online, but the difference is, we do stuff for her, she does stuff for us. She will look up items online before we order them for her.
Her health is wildly variable, but she will always offer to help us if she can. If not, then when we get her shopping she will always tell us to just add on what we want, for example. OP mum sounds like she's not reciprocating in anyway.
So two things here - one, your mum can learn and two, is she expecting something for nothing? My mum would say, hang on, families are supposed to look after each other, it's not meant to be one sided.