Yep, that does sound stressful. ru meaning. SHE's daughter sent you sms stating "mum doesn't have long left and you can't be with her, because you won't agree to our conditions."?
because I'm just thinking outside the box here...
If SHE really is on her death bed then we have a new position on the bargaining table...
which is, SHE is going to die sometime, how long does U77 have to talk with her?
So U77 might follow up on that question, because if SHE is forecasted to die in say 7 days due to ill health, then you may be able to waive discussions with parents and kids for 8 days just so you can comfort She over her dying days. That'd be a nice thing to do for a person in pallative care for example.
So find out how long she has left to live and make your new position known to She.
She is asking the ultimate question. If I am dying will you come to me?
So you ask yourself that question and ask yourself how long you will believe her position about her lifespan.
When I got the msg my grandfather was in pallative care, I was lucky enough to be home with plenty of spare time, so I jumped into the car and drove to see him within the hour. For last requests we might do much - and that is a known tactic, the last request of a dying person.
And if She isn't really dying soon, then it is a manipulative act of fraud, report it to police!
The manipulation of course being, I'm dying, come and do everything I say please!