The term you are looking for is "attorney in fact". The attorney in fact is the person holds the power of attorney and who generally looks after an incompetent person and sometimes is named personal representative in the AIP's will, and that person could additionally be a beneficiary, but your fact scenario is setting off alarm bells, especially if Betty is no longer competent. But how do you really know if the attorney in fact is correct, or not about Betty's incompetency? Is the attorney in fact also a medical doctor who is qualified to diagnose competency? It is also troublesome to read that the attorney in fact has not made arrangements for Betty to be comfortable in her surroundings and activities.
You can contact Adult Protective Services. This is similar to Child Protective Services, but is for vulnerable adults. You can get to them on line starting from http://www.access.wa.gov They can investigate your concerns and help your friend. If you need private counsel, Margaret Dore is the best there is in Seattle for this sort of issue. Hope this helps. Elizabeth Powell