Hi - A personal representative cannot be self-appointed, but it sounds like your brother was named in your dad's Will and then appointed by the probate court. A personal representative is required to provide an inventory (a list of estate assets) within three months of appointment. Since this hasn't happened, I would encourage you to request it in writing, sending letters to both Victoria Powers and your brother.
Personal representatives commonly fail to provide information and updates, which can lead to conflict or at least suspicion. Usually a request is enough, but you also can petition the probate court to require an inventory, to supervise your brother's administration of the estate, or even to remove him if he is not fulfiling his duties. Estates must be kept open at least nine months so the delay isn't unreasonable right now.
The above is not legal advice but rather general information. Legal representation requires specific information and a written engagement agreement between a lawyer and client.
Answered on Dec 29th, 2016 at 10:55 AM