She will not disclose any financial information to me as the only other sibling named in the trust. We also care for mom for weeks or a month at times. She doesn't give us enough money to even cover our expenses and mom requires 24/7 care since she has Alzheimer's/dementia.
Never sign as “ guarantor “ to pay your mother’s bill at a facility . That would make you responsible to pay the bill using your own funds .
Other than that , whoever is POA for finances is responsible for your mother’s money . A 5 year lookback for Medicaid , if Mom would ever be in need , would be a problem with her money being spent frivolously.
Invite your sister to go along with you to an eldercare attorney to learn about Medicaid lookback and how Mom’s money should be handled. They can perhaps draw up a care contract where you each get paid for the care you give. If she won’t go you can go yourself . Mom’s money should pay for the lawyer , but your sister may say no .
i would still go even if sis does not . You’d have to pay I guess ??? Ask questions . You want to make sure how to protect yourself if sis is doing things wrong.
Who is or are the trustees?
Is all of your mother's money coming from the trust, or does she have additional income as well?
Does someone have your mother's POA?
Meet with an Elder Law attorney from Florida. (You can do it by zoom if you don't live there.) He or she can draw up a contract for your mother's money to be paid to your sister when your mother is with her, and to you when she is with you. Send to the attorney a copy of the trust and all of the other financial information.
How do you know what your sister is spending your mother's money on? Do you get the statements, or do you have online access to the accounts? Send all that to the attorney too.