Live in Maryland. 90 year old ailing mother, father has passed. Mother has no will or power of attorney, 6 kids. who is in charge? Mother recovering from a mild stroke. In assisted living, looking for options for care. No will or power of attorney. Who is responsible for making the decision re next steps?
What "options for next steps" are you considering? Is she able to understand these options if they are presented to her? Can she decide among them herself?
If she dies intestate, then you must consult a family lawyer experienced in estate settlements. Every country has laws to solve these issues.
Stop treating her as if she is almost dead. Cheer her up and spoil her. Don't make the distribution of her billions the main focus of your attentions.
POA needs to be in the same state that she is in and realize that it is a couple of hours of work a day, for the first few months.