You need to report this to adult protective services as financial exploitation. And after your mom's death you can pursue a claim against her.

Your question is not entirely clear. But if the prior trustee died, the responsible person would now be the new trustee. If the trust already has...

You need to have an attorney examine the actual documents and make a determination, because trusts are handled differently then wills.

You need to see if a probate was ever opened in his name. If there was not, you should consult an attorney about the possibility of opening one.

You need to consult with an experienced elder law attorney, as just removing his name from the deed and titles will not protect any assets if he...

If a probate was not opened, you should file to open one as if there was no will, and leave it up to her to produce one.

The first question is how much is involved, as to whether it is worth pursuing. Assuming it is, then you can make a dispute with the credit card...

You do not need to do anything in that situation. Everything passed to you automatically after his death.

You can put whatever stipulation you want in a will as long as it doesn't violate public policy (like you son doesn't inherit if he marries a woman...

If your relative has dementia they may not be competent to do a new Power of attorney. You probably need to look at getting guardianship.