A restraining order would probably do it, filed at the justice court. That is a big irreversible step with a family member, best to try talking to them and resolving the issue before getting that drastic.
Not necessarily. It's not required.
Power of Attorney is to give the sibling mentioned and acknowledged by the mother to perform their affairs when the mother cannot such as paying bills; investing money, etc., and no one else can take the right away from the Power of Attorney mentioned since the mother requested this person, not even the sibling who is 40 years old and living at home. Once a parent dies the Power of Attorney no longer exists and the Executor (male) or Executrix (female) named will put the Will into Probate which will pay off any debts before the Estate is settled and any property or monies left will be divided as the parent's Will stated.
The Power of Attorney has no rights over a parent of sound mind. The power of attorney is given by the parent and can be withdrawn at any time. And the power of attorney automatically ends upon the grantor's death.
A power of attorney represents a living person. After their death, you would apply to be executor of their estate with the probate court.
There are none unless it's stated in a will, and or the senior sibling has power of attorney.
You first have to authorize a power of attorney form, then make them sign as the 'Principal' and you should sign as the 'Attorney-in-Fact' If your parent is competent their grant of a Power of Attorney must be voluntary. They must execute a Durable Power of Attorney document that names you as their attorney in fact. You and your parents should consult with an attorney who can review the situation and advise you of your options and the consequences of executing a power of attorney. If your parent is not legally competent then you must petition the court to be appointed their legal guardian.
No
Apply to the probate court for the power. If the circumstances warrant it, they can grant that power.
No
Notarized Power of Attorney
It will typically have to be filed with each third party they are working with. Without a copy of the power of attorney, a bank will not recognize the rights.
The foster parents do not have "power of attorney" . They have guardianship. You need to consult with an attorney who can review your situation and explain your rights and options.