So sorry to hear about your mum.

It sounds as though you’re already being a great help. Taking notes in meetings is so helpful as it means things that have been said can be remembered and reviewed at later dates - I’m doing this at the moment with my husband - but did it for my own mum a number of years ago.

My mum was also appreciative of my being a “ shield” for her - by keeping things as normal as possible, finding interest in day to day tasks, taking her out and about and most importantly ensuring she had enough rest and was protected from well meaning but sometimes intrusive friends and neighbours - as talking about “C” is emotionally exhausting and she just wanted to forget about it day to day.

I would say be led by what your mum wants - having you with her will be a great comfort I’m sure. I found that having helpful phone numbers to hand - triage, hospital nurses, MacMillan etc helped too.

Hope you feel better and try not to put too much of a burden on yourself - you can only do so much 

Jackie x