Background is DP's parents are in their 90s, both have various health problems including dementia. Both still living at home with care from their children as well as paid-for care. All three of the children have both kinds of PoA. It seems likely that mil's care needs will increase in the near future. The siblings disagree about how to approach this.
Is there a way to resolve these kinds of issues? Could 2 of the siblings do something, e.g. move mil to residential care, if the other sibling is opposed to it? Could dp be held responsible if the other siblings did something that was unethical/unlawful?
Even though the sibling relationships are strained, up until now they have managed to reach some kind of compromise.