If LC how do you know they are managing?
Are you relying solely on the sister you are LC with to keep you updated?
Are you actually in the loop/speak with your parents?
Who has POA, the one you are NC with?
Is your mum your dad's carer atm?
Are either ill or showing signs of dementia?
If you are LC/NC, not your circus, not your monkeys.
You must have thought about this already, pending age.
How much you want to be told?
Whether you will attend funerals?
If it is out the blue then either
- Something/someone is ill and you do not know the extent
- Your two siblings are currently doing a lot of care or expect to, and resent you for being out of the equation entirely
- Your NC sister is making an excuse to see you (but unlikely after a decade, surely?)
As long as you neither expect inheritance nor the right to complain about being excluded from future planning then you are right to keep out of it. If you feel you have anything to do with decision-making then this was your time.
The one who is neutral/LC, trying to be diplomatic, being drawn into mediation, is the one I feel sorriest for. Not a flying monkey per se, but presumably used for info now and then or trying to appease all.
Who went NC/LC with who and why?
It's a tough thing to do and if implemented by you, presumably deemed black sheep/awkward one, then you had your reasons.
Being pulled back into the dynamic/dysfunction/power play makes no sense for your own mental health, if you have had to withdraw. I guess your other sister wanted contact of some sort/wanted to see where the land lay. Now they know.