Power of Attorney

My mom granted me durable POA this week, was notarized and filed at Craighead County courthouse. Can my brother obtain a separate POA by coaxing my mom into signing? If so, which document becomes valid if we disagree on future action on her behalf?

Does a durable POA notarized require witnessness? If I have to use POA in future for my husband, do I sign my name or his name

My sister has been my mother's power of attorney for 2 1/2 years. Her and her husband have not worked in 5 years but have been going on trips, they now are able to put their daughter in college, they are no longer in foreclosure on their home and are all of a sudden living the good life. I do not know if the power of attorney had a gift provision in it or not. I am asking the court to appoint a conservator which my sister has convinced my mother to fight. I will ask for a full accounting of all of my mother's finances. My mother had a stroke and is not the same person but my sister gets doctors in to say my mother is not incompetent. If my sister did steal all the money can't she just convince my mother to tell the court she approved of it all? Do I have any chance here?

My aunt is in the nursing home, and someone else has power of attorne over her. She helped raise me when I was a teenager, my cousin got power of attorney over her without me. My aunt want to go home with me, and I want her to, what options do I have. Can I over go that power of attorney, and do mine.

My husband's 86 year old mother 'Ma Mann' is not making good decisions about her health and financial matters. My husband has a statutory durable power of attorney listing him as the agent in Texas where he and his mom reside. Prior to 3 years ago his mom lived alone in a rural farm home. She then moved to the closest city where her daughter lives and all her doctors, etc. Last week her youngest son got out of prison. He is a multiple sexual offender, multiple DWI's, theft, etc. Ma Mann moved back to her rural home and her wayward son has moved in with her. He is not treating her right and is manipulating and controlling her and she is very vulnerable to him. She thinks she is helping him to 'straighten up'. We are concerned about her safety and being bullied by her youngest son who lives with her now.Our question is - how do we implement my husband's Durable Power of Attorney in all the areas listed on the document? Do we have to have her declared incompetent? If so how do we do that? Or can we just show the document to bank, doctor's, etc and take over her overall management in her best interest? If we do the latter - can that be contested by the wayward son or her? Thanks in advance for your help.