Thank you all for your kind responses.
I posted in AIBU because I am just so fucking angry at it all...
My gran is approaching 100, she is v severely demented (non-verbal now) and it is just hideous what she has been through in the last 20 years or so. Curse her strong heart.
DMiL is well over 80, she has vascular dementia so no cognitive enhancers for her. Her decline has been so rapid, it is scary.
She has locally advanced lung cancer, but really is not fit for any intervention - she would have been offered radiotherapy if she had been very symptomatic from it, but she wasn't, really.
She was admitted because her carers found her very very confused in the morning, GP was called who admitted her to hospital. She has a chestinfection, but has perked right up with treatment. So far so good.
The irony is that she was going to move to my DSiL's this weekend... The situation of her staying at home, even with full care package, had become a bit dodgy. We are about 40 mi away from her, have kids, jobs etc - you get the picture.
At least with the cancer, there is an end in sight
.