Legal Question in Real Estate Law in Florida

This question can only be properly answered after a thorough review of the power of attorney AND the trust. If the POA and trust together provide for the proper authority, then you may be able to sell the property as the attorney in fact. I suggest that you speak with an attorney in Florida who may review both documents and provide an opinion.

No. A POA first of all is only good while the principal (your mother) is competent. To be used now it would have be a Durable Power of Attorney (DPOA) since she has dementia and is probably incapacitated.

Even if it was a DPOA, that only gives you the right to act on her personal affairs, not those that she exercises in a fiduciary capacity (such as a Trustee for something like a Trust).

What you have to do is look at the Trust to see the conditions by which a Successor Trustee can take over. Hopefully there is a provision that allows for affidavits by doctors to state her inability to serve, and you are named the successor.

To make sure this may work, you really need to show the documents to an attorney for review and advice. This isn't something you can easily self-help yourself on.