Yes. Shelter may demand direct representative payment of SS benefits as partial payment of your share of cost.

Follow advice of your FL attorney who knows relevant facts beyond what you posted.

Yes. Mother may transfer home to you if you owe CS arrears.

Yes. Financial institution may require you to produce copy of Death Certificate to complete their diligence and investigate your claim.

No. Spouse inheritance is her SP. However, If W has placed CP funds in her 5 additional savings accounts you do have right to reimbursement for...

Yes. Elder abuse may be criminal offense and survive after death of victim.

Knowing submission of false document to court is fraud. No SOL limits on proving fraud upon court.

Possibly. Validity of marriage depends on laws of jurisdiction in which married. Hire FL counsel to do research for you.

Brother may not legally change title to vehicles. Trustee has duty to handle transfer of title to trust assets.

Right to occupy house depends on terms of trust. In their fiduciary role, successor trustees have several fundamental duties. Duty of loyalty....