First, you need to send them something better than a picture - a pdf or hard copy. then you need to have your own attorney look at it.

Just because you were named in the will doesn't mean you have to do it. Unless you are on the lease and would be out money if she hasn't vacated by...

It would need to be determined if he is legally competent or not. If he is, he can do the POA without issue.

That largely depends on the language of the power of attorney. You need to have attorney look at it and advise you.

Yes you can sue them for that, .......................................................................................

Yes, you can sue her for that. Your agent has a fiduciary responsibility to you, an if she breached it you can sue her for that.

You need an attorney to represent you in the guardianship case, who can challenge teh POA legally, b/c you just saying its "junk" doesn't make it so.

I don't understand how you mom is getting your disability money if you are an adult. You may need to consult wih adult protective services.

You need to hire your own attorney who can file something in court if necessary to get this matter concluded.

You should demand that he provide you with an explanation, in writing, of why the estate has not closed yet. Because a delay for unclaimed property...