I would probate the estate and force the sister to produce a will if one exists. Sister is not an 'executor' until she is appointed by a court. ...

Yes, it is legal. See an elder law attorney for advice on protecting assets from threats to include Medicaid Estate Recovery.

No one can have power of attorney over you. You may revoke any powers of attorney you have granted at any time.

You need an attorney. I would not sign anything without the will and consulting with an attorney.

Probably not. You are not next of kin. Your child might have a claim.

Brother can sue to force the sale of the property and division of proceeds. Brother can sue for a share of lost rent. Get a lawyer.

No, it is not partially already sons. If the father does not have a will, then children likely inherit something. See/talk with an attorney in AR.

Who now owns the plot? Has probate been done? Probably the niece owns the plot if the daughter had no other children. That probably needs to get...

Trust in another state is not a problem. The question is what kind of trust? Is it a revocable or irrevocable trust? Who is the trustee? If the...

You need to bring the probate petition, a copy of mothers will, a copy of fathers will, and a copy of the trust to an attorney immediately so that...