Husband trying to care for his parents from a distance

I have a question my husband is trying his best ot help out with his parents, located in Pot St Lucie Florida we live in Tamap fl. There is a small problem going on and I am in the middle. They speak spanish and both are in there 80's. My husband asked me you sent in this message I am noted as patrica61, on this web page his name is Bill. I know all the legal paper work that is need to get things in order for a loved to take care of them. I know the the laws are different ib differrent states too. The early signs are there with his dad that something may be wrong. You see there is another younger brother you picked up from Port St Lucie and moved to North Carolina and now he wants them to sell there house and give up everything and move his mom and dad with him and his family and give the money from the sale of the house. There are no legal papers, such as a will Durable powerr of attorney or itf on any bank accounts. They are in there middle 80's and also have health problems. His mom does not even know who is on the title of the house. we have no money to help out, my husband had a triple by pass, and also his job closed down. My own mom just passed away. One day his father remember then repeats it right after. Also one day he wants to sell the next he does not. As far as the house his brother wants the house sold and the money given to him to help build a bigger home for them to all live together. My husband does not think they can take the cold in the mountains of NC. I placed a call to elder care today awaiting a call back. I can not help I do not speak spanish and our home is small. What is my husband to do. to make sure no one trys to make up their mind for them, they dod not have much money.