The children are the hostages of fate
I don't think there's anything you can do
I have no grandchildren from my son - I am totally glad about that
Byut I have no advice or suggestions because I think the more people try and do their best for their grandchildren the more power the P gets
What can you do?
It depends if you have any contact - how close geographically are they?
Can you watch them without interferring?
And don't interfer - that gives P the more power - but if you can watch and see any proof of neglect or abuse I am sure there are agencies to handle this discretely
I wish I had better answers - but I'm not sure there are any
Sparky