My 86 year old father recently revised his Will to include only my two sisters and me as beneficiaries and made all of us co-executors.

He also expressed his desire that the three of us share in his care and wanted us to have joint power of attorney. His attorney drew us the medical and statutory durable powers of attorney and they were ready to be signed. At this time, we discovered that our sister has had POA for over six years and is objecting to sharing POA. Because of her objection, our father''s attorney refused to allow him to sign. Our sister''s only reason for this is that she thinks we don''t trust her. Up until this point, we had absolutely no trust issues. But in light of this and other suspicious behavior, we have come to believe that she has been committing unscrupulous acts over the last few years that we were not aware of and have completely lost our trust in her. We want POA in order to protect our father but also to prevent our sister from doing anything else that she shouldn''t. Our father still wants to give all of us POA. Is there anything we can do?